Which of the following would result in fraternal twins who don’t have identical DNA 


A) two sperms fertilizing two different eggs that are released in the same cycle

B) one sperm fertilizing, a single egg that splits into two embryos

C) two sperm fertilizing a single egg

D) one sperm fertilizing a single egg

Answer:

Mutation and sexual reproduction are the two main ways that variation is created and maintained in a population. Mutations are random changes in the genetic code of an individual, which can lead to new traits that were not present before. Sexual reproduction involves the combination of genetic material from two individuals, which can create unique offspring with different traits than either parent. These two processes work together to increase the genetic diversity within a population, which is important for adapting to changes in the environment and for the survival of the species over time.

Explanation:

In sexual reproduction, gametes receive a random assortment of genetic information from their parents, which creates unique genetic combinations in the offspring.

These new genetic variations can result in new traits, some of which may be beneficial, harmful, or neutral. Natural selection can effect these traits, causing the amount of beneficial traits to increase in the population, with the opposite happening for harmful traits.

Mutations in sexual reproduction are important for creating and maintaining genetic variation in a population, otherwise evolution would not occur.

Contrary to popular belief, which holds that genes are "cast in stone," research shows that initial encounters can affect how genes are activated and inactivated, as well as whether or whether they're expressed at all.

genetic material that is transferred from parent to kid. The chromosomes with in nucleus of cells have precise sites where genes are ordered sequentially on DNA sequences.

From one child to the next, our genes transmit information. The reason the child has white highlights resembling their mother and their sibling gets brown hair unlike their father, for instance, is genetic. Also, genes influence both the gender of newborns and why some diseases run in families.

To know more about genes visit:

https://brainly.com/question/8832859

#SPJ1

5 fine motor skills are typing, writing, cutting, zipping, threading and 5 gross motor skills that you've used within the last few days are walking, running, jumping, throwing, catching.

Motor skills are the physical abilities that involve movement of the body and its parts. These skills involve coordination, control, dexterity, and balance. Motor skills can be divided into two categories: gross motor skills, which involve the larger movements of the body, such as running and jumping, and fine motor skills, which involve the smaller movements of the body, such as picking up an object or writing.

Fine Motor Skills:

1. Typing - Using my fingers to type on a keyboard.

2. Writing - Using a pen or pencil to write words or draw pictures.

3. Cutting - Using scissors to cut shapes or designs.

4. Zipping - Using my fingers to zip up a zipper.

5. Threading - Using my fingers to thread a needle.

Gross Motor Skills:

1. Walking - Moving my legs to walk from one place to another.

2. Running - Moving my legs quickly to cover a greater distance.

3. Jumping - Using my legs to propel myself up and off the ground.

4. Throwing - Using my arms to throw a ball.

5. Catching - Using my arms and hands to catch a ball.

To learn more about motor skills

https://brainly.com/question/20292222

#SPJ1

Answer:

A mistake in the DNA of a body cell, such as a brain cell, would only affect that particular cell and its daughter cells produced through mitosis. This is because DNA mutations occurring in body cells are not passed on to offspring during reproduction.

In contrast, a mistake in the DNA of a germ cell, such as a precursor cell that eventually develops into a sperm cell, can be passed on to the offspring during reproduction. This is because germ cells undergo meiosis to form gametes (sperm or egg cells), and any mutations in their DNA can be passed on to the next generation.

Therefore, mistakes in the DNA of germ cells have implications for the genetic makeup of future generations, while mistakes in the DNA of body cells only affect the individual organism in which they occur.

Answer:

The number of nuclei formed in mitosis is 2. In mitosis, a single cell divides and gives rise to two genetically similar cells. The number of nuclei formed in meiosis is 4. In meiosis, one cell divides first by reduction division and form two haploid cells ant then these haploid cells undergo mitosis to give rise to four haploid cells.

The number of chromosomes in mitosis remains the same in daughter cells in mitosis because the DNA is replicated in the interphase of mitosis so that chromosome number is not reduced during mitosis. The number of chromosomes is reduced to half in meiosis. There is not DNA replication in the interphase of reduction division.

Answer:

it would be the fastest increasing one as it grows very rapidly

It is accurate to say that the repolarization of the atria is not visible on an ECG because the T wave of the ventricles obscures it.

The wave of atrial repolarization is of little amplitude, undetectable. A typical P wave has a maximum height of 2.5 mm (two and a half 1-mm divisions) and a maximum width of 120 ms (three 1-mm divisions) in any lead.

Abbreviations. The electrocardiographic (ECG) deflection brought on by atrial depolarization is minimal in both amplitude and area when compared to the QRS complex. The subsequent QRS complex frequently obscures atrial repolarization.

To know more about ventricles visit:-

https://brainly.com/question/29564818

#SPJ1

The muscles involved in a bicep curl are the biceps brachii, brachialis, and brachioradialis. The biceps brachii acts as the prime mover, contracting to lift the weight and flex the elbow joint.

The brachialis and brachioradialis act as synergists, assisting the biceps in flexing the elbow joint. The triceps brachii acts as an antagonist to the biceps, working to extend the elbow joint and resisting the flexion created by the biceps.

a) Vanessa pulls her hamstring muscles. b) The hamstring muscle group is made up of three muscles: the biceps femoris, semitendinosus, and semimembranosus. c) The quadriceps muscle group is antagonistic to the hamstring group, working to extend the knee joint and resisting the flexion created by the hamstrings.

a) The hip flexor deep in the pelvis that is a composite of two muscles is the iliopsoas. It is made up of the iliacus and psoas major muscles. b) The gluteus maximus muscle is antagonistic to the iliopsoas, working to extend the hip joint and resisting the flexion created by the iliopsoas.

The muscles that allow you to draw your legs to the midline of your body are the adductor muscles. These include the adductor longus, adductor brevis, adductor magnus, gracilis, and pectineus muscles.

The wrist flexor that follows the radius is the flexor carpi radialis muscle.

Thus, The muscles of the lateral leg that plantar flex and evert the foot are the peroneus longus and peroneus brevis muscles.

Learn more about hip flexors at :

https://brainly.com/question/30262611

#SPJ2

Answer:

Porifera Sponges - Multicellular

Cnidaria Jellies- True tissues

Platyhelminthes Flatworms

Bilateral symmetry, Cephalization, Triploblastic

Nematoda Round Worms - Body Cavity

Mollusca Mollusks - Body Cavity, Nervous systems, Messenteries

Annelida True Worms - Segmentation, Specialization of gut areas

Arthropoda Buggity Bugs - Jointed appendages, Highly developed cephalization

Echinodermata Sea(stars, urchins, cucumbers) -Deuterostome development

Chordata and Subphylum Vertebrata - Internal skeletal support

Agnatha - Endoskeleton, Cranium

Chondrichthyes - Jaws, Paired fins

Osteichthyes - Calcified bones, Lateral lines

Amphibia - Supportive limbs, Double loop circulation, Lungs, Tympanum

Reptilia - Amniotic egg, Watertight skin, Alveoli, Heart with ventricular septum

Aves - Endothermy, Feathers, Hard shelled egg, Flight adaptations

Mammalia -Mammary glands, Highly developed brains

Explanation:

Hope this helps

Major Evolutionary Milestones are:

It is generally accepted that the Major Evolutionary Milestones of contemporary humans from our archaic ancestor involves four main stages:

These are the Hadean (4.6–4 billion years ago), Archean (2.5–4 billion years ago), Proterozoic (2.5–541 million years ago), and Phanerozoic (4.4–4.6 billion years ago) (541 million years ago to the present).

Learn more about Evolutionary Milestones, here:

https://brainly.com/question/1279660

#SPJ2

Answer:

The total amount paid for the loan can be calculated as follows:

Total amount = Principal + Interest

Where Principal is the amount borrowed, and Interest is the additional amount charged for borrowing the money.

Given:

Principal (P) = $3200

Interest rate (r) = 5% = 0.05 (as a decimal)

Time (t) = 4 years

Using the simple interest formula:

Interest = P × r × t

Interest = $3200 × 0.05 × 4

Interest = $640

Therefore, the total amount paid for the loan is:

Total amount = $3200 + $640

Total amount = $3840

Hence, the total amount paid for the loan is $3840.

Explanation:

The most probable genotype of each parent will be:Parent 1: Gg × ggParent 2: Gg × GgParent 3: gg × ggParent 4: Gg × ggParent 5: Gg × Gg

As per the given scenario, in peas, gray seed color is dominant to white. In the experiments listed, the parents with known phenotypes but unknown genotypes produced the progeny given below. Parents:a. Gray x whiteb. Gray x grayc.

White x whited. Gray x whitee. Gray x grayThe progeny are given as below:Gray: 82, 118, 0, 74, 90White:

78, 39, 50, 0, oThe most probable genotype of each parent would be:

Parent 1 (a)If the gray seed color is dominant to white seed color, the gray parent could be homozygous dominant (GG) or heterozygous (Gg), and the white parent could be homozygous recessive (gg). Hence, the most probable genotype of gray would be Gg (heterozygous) and that of white would be gg (homozygous recessive).

Parent 2 (b)In case both parents are gray, we can assume that both parents are either homozygous dominant (GG) or heterozygous (Gg). Hence, the most probable genotype of both parents would be Gg (heterozygous).

Parent 3 (c)In case both parents are white, we can assume that both parents are homozygous recessive (gg). Hence, the most probable genotype of both parents would be gg (homozygous recessive).

Parent 4 (d)If the gray seed color is dominant to white seed color, the gray parent could be homozygous dominant (GG) or heterozygous (Gg), and the white parent could be homozygous recessive (gg).

Hence, the most probable genotype of the gray parent would be Gg (heterozygous) and that of the white parent would be gg (homozygous recessive).

Parent 5 (e)In case both parents are gray, we can assume that both parents are either homozygous dominant (GG) or heterozygous (Gg). Hence, the most probable genotype of both parents would be Gg (heterozygous).

To learn more about : parent

https://brainly.com/question/26152941

#SPJ11

When the rocket is fired, the shooter will feel a backward force of 675 N.

The interaction between two things that causes a change in motion for either one or both of the objects is referred to as exerting force. It is described as the pressure or pulling that one thing applies to another.

A force's magnitude, direction, and application point can all be used to define it.

With every action, there is an equal and opposite response, states Newton's third rule of motion.

When a rocket is fired, the action is the forward force the rocket exerts, and the reaction is the force the shooter feels as the rocket recoils.

The recoil force experienced by the shooter will be 675 N if the rocket pushes forward with a force of 675 N. This indicates that when the rocket is fired, the shooter will feel a backward force of 675 N.

To know more about force, visit:

https://brainly.com/question/13191643

#SPJ1

The most likely cause of the changes in allele distribution is that the medium gray coloration in lizards appears to be a neutral mutant allele that allows the lizards to hide better from predators.

Since black lizards are less able to hide from predators, the allele for black coloration decreases in frequency due to reduced fitness.

On the other hand, the medium gray coloration allows lizards to blend in with their environment, making them less visible to predators and increasing their chances of survival.

Therefore, the frequency of the gray allele increases over time as natural selection favors individuals with this allele.

Learn more about natural selection at: https://brainly.com/question/15577096

#SPJ1

Answer:

(A)

Explanation:

they pant because they are cooling there

self down

Answer: B

Explanation:

Non-renewable energy are natural substances such as oil, natural gas, coal, and nuclear energy, that we use for energy. These substances cannot be readily replaced by natural means.

Answer:

Organisms at the top of the food chain, such as apex predators, often have smaller populations because they require more resources to sustain themselves, and they have fewer individuals to prey on. Additionally, they may be more vulnerable to environmental disturbances or changes that affect their prey or habitat.

Specialist organisms, such as those that require a specific type of food or a narrow range of environmental conditions, are also often less common than generalists that can adapt to a wider range of conditions. This is because their survival is tied to a very specific set of circumstances, and any changes to those conditions could have a significant impact on their population size.

However, it's important to note that the least common organism in a given ecosystem or community can vary widely depending on the specific context and the interactions between different species.

Explanation:

The image's distribution of earthquake foci indicates that the quakes are likely happening deep within a dipping zone, which is consistent with a subduction zone.

This 0–700 km earthquake depth range is classified into three zones for scientific analysis: shallow, middle, and deep. Deep earthquakes range in depth from 300 to 700 km, whereas moderate earthquakes occur between 70 and 300 km deep.

Plate tectonic boundaries known as subduction zones are formed when two plates converge and one plate is driven beneath the other. Geohazards like earthquakes and volcanoes are produced as a result of this process.

To know more about earthquake visit:-

https://brainly.com/question/12340459

#SPJ1

Answer:

Normal faults and reverse faults are two types of faults that occur in the Earth's crust. The main difference between these two faults is the direction of the movement of the hanging wall and the footwall. In a normal fault, the hanging wall moves downward relative to the footwall. In contrast, in a reverse fault, the hanging wall moves upward relative to the footwall. This difference in movement can be used to easily tell normal and reverse faults apart. Additionally, normal faults tend to occur in areas where the Earth's crust is being pulled apart, whereas reverse faults tend to occur in areas where the Earth's crust is being compressed or pushed together.

Explanation:

Answer:

Mutation and sexual reproduction are two essential processes that contribute to creating and maintaining variation in a population.

Mutation is the ultimate source of genetic variation in a population. It is a random process that generates new alleles or genetic variations in an organism's DNA. Mutations can arise due to various factors such as exposure to radiation, chemicals, or errors during DNA replication. These mutations can be beneficial, harmful, or neutral, and they can change the physical traits of an individual.

Sexual reproduction involves the fusion of gametes from two parents to produce offspring that inherit traits from both parents. The process involves the mixing and recombination of genetic information from each parent, resulting in a unique combination of genes in the offspring. Sexual reproduction can introduce new genetic variations into the population and shuffle existing genetic variations, resulting in an increase in genetic diversity.

Both mutation and sexual reproduction work together to create and maintain genetic variation in a population. Mutations provide the raw material for genetic variation, while sexual reproduction shuffles and recombines this variation. The combination of these two processes leads to the creation of unique genetic combinations, which can help populations adapt to changing environmental conditions and evolve over time.

Explanation:

The excerpt from a loss of friendship best lends a personal tone. A subjective tone of voice conveys opinions, feelings, or judgements.

Two single-frequency tones will interfere with one another and create a beat frequency when they are present in the air at the same moment. If the beat frequency is in the mid-frequency range, it will be perceived by the human ear as a third tone, also known as a "subjective tone" or "difference tone," which is equivalent to the difference seen between frequencies of the two tones.

You can probably expect experiences, sensations, feelings, and ideas in the details. An neutral tone is objective. It is unbiased or objective because it does not express any opinions in favour of or against a subject.

To know more about subjective tone, visit:

https://brainly.com/question/18556879

#SPJ1

Answer:

There is a wide range of views on climate change across the world. While many people understand and acknowledge the scientific evidence that climate change is happening and that human activities are contributing to it, others are more skeptical and deny the reality of climate change altogether. Some people may also acknowledge climate change but are unsure of how to address it, while others may recognize the issue but feel that it is not a priority compared to other pressing problems.

Overall, the level of concern and action taken on climate change varies greatly between different countries and communities. Some countries have made significant strides in reducing their carbon emissions and adopting more sustainable practices, while others have been slower to act or have even actively resisted climate action.

It is clear, however, that climate change is a global problem that affects us all, and concerted global action is needed to mitigate its effects and ensure a sustainable future for all.

Answer:

4

Explanation:

there are four stomach compartments in a ruminant animal.

Answer/ Explanation:

A. Continental drift refers to the movement of continents spreading apart from one another, where they once were one large landmass. This landmass was called Pangea.

B. The creator of the theory is Alfred Wegener.

C. The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.

Answer: Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles for a gene in a diploid organism. When there is a gene existing in more than two allelic forms, this condition is referred to as multiple allelism. Allelism refers to any of the several forms of a gene. These genetic variations arise usually through mutation and therefore are responsible for hereditary variations.

In Drosophila, eye color is controlled by 15 alleles, wild type or normal allele is 'W' which produces red eye color which is dominant over all other alleles. Allele 'w' codes for white eye color which is recessive to all other alleles.

Johannesburg and Sydney are the only two possibilities that have a subtropical climate.

A climatic zone characterized by hot, humid summers and cold to mild winters is known as a humid subtropical climate. These climates are often found poleward of nearby tropical climates on the southeast side of every continent (apart from Antarctica). They are typically found between latitudes 25° and 40°.

One of the many zones on Earth is known as the "tropics," which are the areas around the equator between the tropics of cancer in the north and the tropics of capricorn in the south. each hemisphere.

To know more about subtropical climate visit:-

https://brainly.com/question/3601081

#SPJ1

Answer:

A. Two ways the climate has changed since the Mesozoic are:

Cooling: The average temperature of Earth has decreased significantly since the Mesozoic era, particularly during the Cenozoic era. This cooling was caused by a decrease in atmospheric carbon dioxide levels, changes in ocean circulation patterns, and other factors.

Increased variability: The climate has become more variable and unpredictable since the Mesozoic era, with more frequent extreme weather events such as droughts, floods, and hurricanes. This may be due to changes in ocean and atmospheric circulation patterns, as well as human-induced climate change.

B. One way vegetation has changed since the Mesozoic is:

Evolution of flowering plants: During the Mesozoic era, the dominant plant species were gymnosperms such as conifers and ferns. However, during the Cenozoic era, flowering plants (angiosperms) became the dominant plant species. This change in vegetation may have been driven by the evolution of new pollination strategies and adaptations to changing climate conditions.

Explanation:

The seasons on the outer planets are distinct from those on the inner planets because of the longer orbital periods and greater axial tilts of the outer planets.

Minor planets including Mars, Earth, Venus, and Mercury are regarded as inner planets. Mercury is believed to be the smallest inner planet, alongside Earth getting the biggest. The vastly larger distant planets, such as Jupiter, Saturn, Uranus, and Neptune, are the opposite.

Any planet of our Solar System whose trajectory lies outside the asteroid belt, such as Jupiter, Saturn, Uranus, or Neptune, is referred to as an outer planet (plural outer worlds) in astronomy.

To know more about Outer planet visit :

https://brainly.com/question/23886991

#SPJ1

Marine plants similar to alge help provide sutanacne and shelter to marine life. but they are not just importiant to aquatic ecosystems; they provide about 70-80 percent of the oxygen on earth, making them extremly importiant to our everyday lives as well! marine plant and alge are both different and similar to their cousins on land: like terrestrial plants they rely on sunlight, so they are usally only found at depths were at least some light can penetrait.

i hope this helps!

happy st patricks day have a good day

Non-algae plants in the ocean, particularly seagrasses and mangroves, provide critical habitats for marine species, improve water clarity, protect coastal areas, and prevent erosion.

Non-algae plants in the ocean, specifically seagrasses and mangroves, play vital roles in marine ecosystems. Seagrasses provide a habitat for many marine creatures including fish and invertebrates, acting as a nursery ground for young organisms. They also contribute to water clarity by helping to bind the sediment.

Mangroves, on the other hand, act as a buffer zone protecting the coastal areas from strong waves and winds. They prevent erosion and contribute to the stability of the shoreline. Mangroves is also a critical habitat for various forms of wildlife and serve as a breeding ground for a multitude of marine species.

https://brainly.com/question/8019404

#SPJ2