Number 20 Please help I will mark brainliest

Answers

Answer 1

Answer:

H.) The offspring will have the correct number of chromosomes when the sperm and egg are joined

Explanation:

This is because the sperm has 23 number of chromosomes and the egg has 23 number of chromosomes as well. When they fuse, they from 46 chromosomes.

Answer 2

Answer:

I think it is H.

before the egg and sperm join they have half of the chromosomes each when they join the chromosomes add up to the right amount which is 46

Related Questions

Which macromolecule plays a central role as an energy source?

Answers

Answer:

Carbohydrates

Explanation:

Ex: Glucose (monosaccharide)

Can someone help me with the question please.

Answers

Answer:

B Sun > Algae > Shrimp > Red drum

if you step on a sharp object muscles in your leg will rapidly put your foot away.

what is the correct term for this type of reaction?

Answers

Answer:

Explanation:

Sharp object the reaction is a reflex its involuntary and it doesn't involve ur brain it protects u from damage.So u step on the sharp object whihc is a stimulus so the reaction is reflex its quick and automatic.

Hope this helps

Reflex arcs can also be more complex. For example, consider what happens when you step on a sharp object. As in the example above, a sensory (pain) neuron carries an impulse to an interneuron in the spinal cord. The interneuron synapses with motor neurons which pull your foot away from the sharp object, just as in the example above. However, if that was all that happened you would probably fall over! The interneuron also synapses with motor neurons which control the muscles of the other leg. These muscles adjust your position so you do not fall. The interneuron synapses with still other neurons, which carry the information about what has happened to the cerebellum (which coordinates the muscular activities) and the cerebrum, so that you become "conscious" of what has happened and can take further voluntary action.

The workers who paid a rate for every day they work are known as

Answers

Answer:

piece work

Explanation:

I hope this is right

If you have 2.0 moles of magnesium how many atoms of magnesium do you have?

Answers

Answer:

6.02E+23 atoms

Explanation:

(GIVING BRAINLIEST) ______________ energy is the total potential and kinetic energy of particles in an object.
Group of answer choices

Chemical

Nuclear

Thermal

Answers

Answer:

Thermal

Explanation:

The total kinetic and potential energy of the particles in an object is called thermal energy.

Can you tell me which go where?

Answers

Answer:

heredity goes to the first one

phenotype at the second one

Explanation:

How many cells do males create during meiosis? How many cells do females create
during meiosis?

Answers

Answer:

Males => 4 Females => 4

Explanation:

Answer:

sperm in males, eggs in females. During meiosis one cell? divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes? of the parent cell – they are haploid. Meiosis produces our sex cells or gametes

Explanation:

DNA strands run in 1 of 2 directions depending on which end of the strand is free and which end has a phosphate bond. One direction is 5' to 3' (__________) and the other direction is 3' to 5' (downstream). __________ polymerase binds to the DNA at the TATA box and unzips the double helix. Working along the DNA chain, RNA polymerase reads the DNA nitrogenous bases and matches RNA nitrogenous bases from the nucleus (uracil instead of thymine). As it moves, RNA polymerase re-zips the DNA behind it and lets the mRNA separate from the DNA. It continues to do this until it reaches a sequence downstream called a __________ signal. In other words, RNA polymerase copies the DNA sequence downstream of the TATA box into an mRNA strand.

Answers

Answer:

The answers in the blank spaces:

1. Upstream

2. RNA

3. Terminator

Explanation:

This question is describing the process of transcription, which is the process whereby DNA template is used to synthesize an mRNA molecule. Transcription involves three stages viz: initiation, elongation and termination.

- DNA strands run in 1 of 2 directions depending on which end of the strand is free and which end has a phosphate bond. One direction is 5' to 3' (UPSTREAM) and the other direction is 3' to 5' (downstream). An enzyme called RNA polymerase binds to the DNA at the TATA box and unzips the double helix (INITIATION).

- Working along the DNA chain, RNA polymerase reads the DNA nitrogenous bases and matches RNA nitrogenous bases from the nucleus (uracil instead of thymine). As it moves, RNA polymerase re-zips the DNA behind it and lets the mRNA separate from the DNA (ELONGATION).

- It continues to do this until it reaches a sequence downstream called a TERMINATOR signal (TERMINATION). In other words, RNA polymerase copies the DNA sequence downstream of the TATA box into an mRNA strand.

7. Light-absorbing molecules like chlorophyll found in the photosynthetic organisms are called
(LT#2)
A. thylakoids B. grana C.pigments
D. stroma

Answers

Answer:

C. pigment

Explanation:

List some
examples of adaptive evolution:

Answers

Answer:

The changes are the organism's adaptive traits and they arise as a result of natural selection. An example of adaptive evolution is the horse's teeth. Its teeth are one of the traits that made it fit for a grass diet. In contrast, genetic drift produces random changes in the frequency of traits in a population

Explanation:

Answer:

I will give you 5 of them :)

1.Flightless Birds

Birds such as ostriches, emus and penguins are unable to fly. However, this hasn't always been the case — each of these flightless birds has ancestors who easily flew. Over many generations, ostriches and emus evolved to have larger bodies and feet made for running on land, which left them without the ability (or need) to fly. The same goes for penguins, who traded typical wings for swim-friendly flippers over many thousands of generations.

2.Blue Moon Butterfly

The Blue Moon Butterfly on the Samoan islands was attacked by a parasite, which destroyed male embryos. This changed the balance of male and female but that was remedied within 10 generations. This is because the few male moths that were immune lived to breed.

3.Mexican Cavefish

Mexican cavefish once had eyes, but in the caves, eyes were no longer necessary. They have also lost their pigmentation because they no longer need camouflage from predators. This is an example of regressive evolution, the belief that "if you don't use it, you lose it" when it comes to traits.

4.Warrior Ants

These ants have a chemical signal that identifies their colony. Some ants learned to imitate this signal from another colony, so they can attack a colony and take over. The worker ants will not even realize there has been an invasion and continue to work.

5.Pesticide Resistant Insects

Whenever you use a pesticide, it kills the majority of an insect population. However, certain insects will experience a gene mutation to develop immunity to it and those insects will reproduce. This happens very quickly, within a few generations, since the generation length for insects is short.

Explanation:

Color blindness is a X-linked recessive trait. A couple want to predict whether it would be possible for their child to be color blind. The female is an unaffected carrier and the male is red/green color blind. What percentage of offspring would be color blind?

Answers

Answer: There is a probability (n.b. NOT certainty) that half of all offspring will be colour blind.

Explanation: The female is XX and as an unaffected carrier we can assign genotype Cc where c is the recessive allele.

The male is XY and colour blind, so genotype cY

Male offspring can be cY or CY so p|colourblind = 50%

Female offspring can be Cc or cc so, again p= 50%

If there is also equal probability of sex of the offspring, there is an overall probability that half the offspring will be colour blind

Which is located at the beginning of a gene?

terminator
promoter
mRNA
intron

Answers

Promoter................

what is a cell that is the source of other cells

Answers

Answer:

stem cells

Explanation:

Why is Linnaeus called the father of taxonomy?

He created the classification level called domain.

He developed the modern system of naming organisms.

He explained the steps that led to the formation of a species.

He used more than one common name for the same organism

Answers

Answer:

he developed the modern system of naming organisms

Which statements about freshwater sources are true? Check all that apply. B Only about 3 percent of Earth's water is fresh water Most of the fresh water on Earth is groundwater. About 75 percent of the fresh water on Earth is frozen in ice sheets. The largest source of usable fresh water is groundwater. More fresh water is in the atmosphere than in rivers and lakes.

Answers

Answer:

all but 3 percent

Explanation:

because i looked it up

Answer:

groundwater is correct

QUESTION: Which one of the following is likely to be most effective in reducing dental decay?

(a) Eating fibrous food, e.g. apples, after meals.
(b) Cutting down on sweets, biscuits etc. between meals.
(c) Cleaning the teeth after meals and at night.
(d) Using an antiseptic mouthwash.

help me plz

Answers

Answer:

It is between B and C I am 99.999% Sure its C but you might wanna check :))))

Explanation:

According to the data in the table, what percent of the elodea cells is water? Explain how you arrived at this conclusion.

Answers

Answer:

99%

Explanation:

at a salt solution concentration of 2%, plasmolysis first started to occur. So the other 98% in the "solution" would have just been water. Since water inside cells needs to be greater than the amount of water outside the cells, we can say that the amount of water inside the elodea cells was 99% so that it can allow hypertonic plasmolysis to occur.

good luck in honors bio>.<

all you need is in the photo

Answers

Pretty sure it’s third choice :))

I think it would be the third option

Why might Ponyboy have idolized Pual Newman?

Answers

Ponyboy might have idolized Paul Newman because Paul Newman played many rebellious characters who Ponyboy could relate to. Some characters he played were “Fast Eddie” in The Hustler and a Southern chain gang member in Cool Hand Luke.

In a certain plant, yellow leaves are dominant (Y) and red leaves are recessive (y). Plant with genotype Yy and a plants with yy crust. If they have for offspring how many would you predict would have red leaves? (Hint: draw a punnett square to help you determine the answer)

Answers

Answer: 1

Explanation:

a p e x

Answer:

Explanation:

HELPPPPPP MEEEEEEEEE PLZZZZZZZZZZ

Answers

Answer:

01). cells

02).seeing inside the cells

03).Robert hook

The freezing point of a mixture of water and salt is
A. higher than that of pure water
B. the same as that of pure water
C. lower than that of pure water
D. none of the above

Answers

Answer:

lower

Explanation:

salt makes thing freeze faster

Answer:

Explanation:

Because when you mix a mixture and pure substances it’s higher

In a simulation of genetics, a child inherits either a dominant or recessive
allele from each parent. Which of the following would be the best method for
randomly determining which of two possible alleles a child inherits from the
father?
A. Drawing from a deck of cards printed with either an uppercase or
lowercase a
B. Blindly selecting from a bag filled with blue, green, red, and yellow
beads
C. Throwing a dart at a dartboard hanging on a wall at a distance of
10 feet
D. Rolling a six-sided number cube and using the number on the top
side
SUBMIT
PREVIOUS
No

Answers

The gene inherited from the father is best obtained by rolling a six-sided number cube and using the number on the top side.

What is genetics?

Genetics is the science that seeks to study the patterns of inheritance in individuals. It deals with the study of genes which often occur in pairs called alleles.

The best way to determining which of two possible alleles a child inherits from the father is rolling a six-sided number cube and using the number on the top side.

Learn more about genetics: https://brainly.com/question/9813642

Answer:

A. Drawing from a deck of cards printed with either an uppercase or

lowercase a
or
A. Drawing from a deck of cards printed with either an uppercase or

lowercase Q

Explanation:

Molecules of DNA are composed of long chains of?

Answers

two long polynucleotide chains

A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together

Molecules of DNA are composed of long chains of nucleotides.

What are nucleotides?

Nucleotides are the building blocks of DNA and RNA adenine (A), thymine (T), guanosine (G), and Cytosine (C. In RNA, uracil (U) is present instead of thymine.

The pentose sugar is the ribose sugar in RNA and deoxyribose sugar in DNA. In deoxyribose sugar, oxygen is absent from the 3' carbon.

Phosphate groups are attached through the 5-C of pentose sugar by an ester bond. One polynucleotide chain is formed when the phosphate of one nucleotide forms a phosphodiester bond with the sugar of another nucleotide.

A double-stranded structure is formed by base pairing between nucleotides. The adenine binds to thymine by two hydrogen bonds and guanine binds to cytosine by three hydrogen bonds.

Therefore the molecules of DNA are composed of long chains of nucleotides.

Answers

Answer:

bb bc there more alike

but i am not so sure

I am failing in school and i need help with this it is a home work defineMaritime

Answers

Answer:

Maritime transport and fluvial transport, or more generally waterborne transport, is the transport of people or goods via waterways. Freight transport by sea has been widely used throughout recorded history.

Explanation:

I don’t rly know tbh hsgsgdgdgsgdgdgdg

I'll give you a cookie if answered

Answers

Answer:

a mutation

Explanation:

becaus ethere are diffrent traits wich would be a mutation im in middle school i learned this is 2 so trust me.

Answer:

variation

Explanation:

Any difference between individual organisms or groups of organisms of any species caused either by genetic difference or by the effect of environmental factors is called variation. Variation is observed in physical appearance, metabolism, behavior, learning and mental ability, and other visible characters of an individual.

8.
What is meant by the term base-pairing? How is base-paring involved in DNA replication?

Answers

Answer: Hydrogen bonds form only between specific base pairs. ase pairing ensures that the complementary strands produced are identical to the original strands.

Explanation:

Sarah was testing paper towels to see which brand was the strongest. She used five brands of towels in her experiment. She wet the towels and then used them to hold beans. She counted the number of beans the wet paper towels could hold without tearing. When the experiment was completed, Sarah compared the towel strength using a bar graph. What was her label on the X-axis?

Answers

Answer:

I think it is 6 I think maybe

Answer: Explanation:

on the x-axis is the paper towels. (1, 2, 3, 4, 5)

y-axis will be the beans, seeing how much it held on those 5 towels.

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