If a mother is a carrier of the recessive gene (Xx) for hemophilia and
there is a 25% chance of having a child with hemophilia, what must the
father's genotype be?

Answers

Answer 1

Answer:If she gets the X chromosome with the hemophilia gene she will be a carrier. So a carrier's daughter has a 50% chance of being a carrier. A woman who is a carrier has: a 25% (one in four) chance of having a daughter who is a carrier.

Explanation:


Related Questions

If humans accidentally release an herbicide, a chemical that kills plants, into the ponds, what impact would this have on the amounts of carbon the ponds could remove from the surrounding environment?
A.The amounts of carbon that the ponds could remove would decrease because there are less plants to cycle matter.
B. The amounts of carbon that the ponds could remove would increase because there is more area to cycle matter.
C. The amounts of carbon that the ponds could remove would increase because the plants decompose underwater.
D. The amounts of carbon that the ponds could remove would decrease because the plants retain strong roots.

Answers

i think it’s 1. please tell me if i’m wrong.

Helpppp
In the lytic cycle, how does the virus cause
the host cell to die?
By taking over the bacterial cell and making it produce viral DNA
and protein.
By becoming part of the host DNA.
By damaging the cell membrane as it injects viral DNA into the
host celL.

Answers

Answer:

A

Explanation:

A virus, or phage, will go into a cell and inject instructions for it to start reproducing more viruses. Once the cell is full of viruses, they trigger the cell's 'self destruct' and burst out to go to other cells and rapidly reproduce exponintially.

a single strand of DNA helix has the code CGCTAA. which would be the complementary code on the other strand of helix​

Answers

I think it is GCGATT

Answer:

The other side would be GCGATT

Explanation:

Adenine (A), cytosine (C), guanine (G), or thymine (T).

A (adenine) always pairs with T (thymine)

C ( cytosine) always pairs with G (guanine)

Hope this helps.

Sorry if it doesn't.

what is cellurar respiration?

Answers

Answer:cellular respiration is a process by which cells use oxygen to produce energy from food.

This happens in the mitochondria


Disease in plants is a density dependent because?

Answers

Answer:

Disease can be density-dependent because organisms have to live close enough to one another for the disease to spread.

HELP ME PLEASE!! THIS IS A TEST!!! PLEASE!!!

Stuart is listing the changes to matter and energy that occur during the process of photosynthesis which of these examples should he include in his list?

A.) changes in chemical energy converts carbohydrates into smaller molecules
B.) changes in light energy convert chemical energy stored in carbohydrates
C.) changes that convert chemical energy into heat and light
D.) changes in nuclear energy converts hydrogen and oxygen into carbon
PLEASE AND THANK YOU!!!! HELP MEEE!!!​

Answers

the answer would be C. None of the other answers choices have anything to do with photosynthesis

Glucose is what type of molecule A: Multi- complex B: Protein C: Sugar D: Lipid

Answers

Answer:

Within all lifeforms on Earth, from the tiniest bacterium to the giant sperm whale, there are four major classes of organic macromolecules that are always found and are essential to life.  These are the carbohydrates, lipids (or fats), proteins, and nucleic acids.  All of the major macromolecule classes are similar, in that, they are large polymers that are assembled from small repeating monomer subunits. In Chapter 6, you were introduced to the polymers of life and their building block structures, as shown below in Figure 11.1. Recall that the monomer units for building the nucleic acids, DNA and RNA, are the nucleotide bases, whereas the monomers for proteins are amino acids, for carbohydrates are sugar residues, and for lipids are fatty acids or acetyl groups.

Explanation:

Which organelle plays an important role during mitosis, helping to move chromosomes around the cell
a

Ос
Od
vacuoles
Golgi bodies
chloroplasts
centrioles

Answers

Answer:

Explanation:

Duplicated centrioles are responsible for moving chromosomes during mitosis.

They are involved in the formation and organization of spindle during cell division (mitotic phase) and also in the process of cytokinesis.

It is composed of nine triplets of microtubules that are the proteins of cytoskeleton.

Spindle fibres contain multiple proteins that help in the binding with centromere during cell cycle.

They originate from the poles of the cell by the organelle called centriole, and attached to the kinetochore of the chromatid.

Many spindle fibres are just connected between two poles, as they are not attached to the chromatids.

These fibres orient the chromosomes into pairs, to the metaphase plate into a line during metaphase.

During anaphase they are shortened, which pulls the chromosomes to the opposite poles separated from the pairs.

At the end in telophase, where nuclear membrane becomes visible it disappears.

In this way the spindle fibers help in the separation of chromosomes into two new daughter cells. This process is also known as the distribution of heredity or genetic information between new cells.

plsssss helpppp asap

Answers

Answer:

cant see the pic

Explanation:

What question did Charles Darwin attempt to answer?
A. Where is genetic material stored in the cell?
B. How many offspring can an organism have?
C. Why do different organisms live in different places?
D. Are an offspring's traits similar to those of its parents?

Answers

Answer:

The correct answer is C. Why do organisms in different places have different traits?

Explanation:

Charles Darwin was a naturalist, biologist, and geologist from England and known for his theory of evolution. According to the theory, he observed different types of species of organisms such as birds, plants and fossils all over the world and found similarities in the characteristics.

He suggested that there were variations in species on the basis of specific geological locations. On the basis of these observations, he proposed that all species of organisms are come from the same ancestor but shows the differences due to the response to the condition of their habitat or location

Answer: C <3

Explanation:

Which statement best describes a portion of the molecule represented below?
a. It consists of many ribose sugars
b. It unites with amino acids in the cytoplasm
c. It contains uracil, which functions in protein synthesis
d. It consists of alternating phosphates groups and deoxyribose molecules

Answers

Answer:

d. It consists of alternating phosphates groups and deoxyribose molecules

Explanation:

The statement above best describes a portion of the molecule that is represented here.

Actually, the molecule represented here is the Deoxyribonucleic acid (DNA). The molecule is composed of two polynucleotide. The DNA carries genetic properties that lead to growth, development, reproduction and functioning of organisms. The phosphate group and deoxyribose molecule are found attached to the DNA. The phosphate group is also found in RNA and in ATP. The deoxyribose is known to be a five-carbon sugar molecule which helps to form the phosphate backbone of DNA molecules.

The given molecule is consists of alternating deoxyribose molecules and phosphates groups.

DNA:

It is the biomolecule that is made up of nucleotide polymers. Nucleotide are made up deoxiribose sugar, phosphate, and nitrogenous bases.

In a DNA strand one nucleotide link with another by the phosphodiester bond in which 3' OH of pentose sugar bond with 5' OH of phosphate.

Therefore, the given molecule is consists of alternating deoxyribose molecules and phosphates groups.

To know more about DNA,

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The final stage of the cell cycle, during which the cytoplasm divides, is called * Telophase Mitosis O O Cytokinesis Prophase Interphase Metaphase Anaphase​

Answers

The correct answer is cytokinesis it is the phase where the cytoplasm of the parent cell is separated into two .For example trough cleavage in animal cells.

Why is some amount of air is left inside in your lungs after inhalation

Answers

Answer: Residual volume (RV) is the volume of air remaining in the lungs after maximum forceful expiration. In other words, it is the volume of air that cannot be expelled, thus causing the alveoli to remain open at all times. The residual volume remains unchanged regardless of the lung volume at which expiration was started. The residual volume (RV) is the amount of air that is left after expiratory reserve volume is exhaled. The lungs are never completely empty: There is always some air left in the lungs after a maximal exhalation.

So your answer will be Residual volume...

Hope this helps........ Stay safe and have a Merry Christmas!!!!!!!!! :D

It is left because exhaling will never remove all air from your lungs, if it did your body would shut down due to lack of oxygen to all organs. It distributed the atoms throughout the body.

which combination of alleles could be produced in a gamete of an individual that has the genotype AaBbcc? A) abc B) AB C) Aa D) ABC

Answers

Answer:b. AB

Explanation:

The Appalachian Mountains were formed about 500-400 million years ago. What has caused them to change so much over time

Answers

Answer:

There are many factors that go into the changes made to the Appalachian Mts.; you've got wind erosion, water erosion from rain/snow melting, and tectonic plate movements that can either cause the mountains to grow or to shrink.

Which structure is correctly paired with its function? (1) testis — produces nutrients for the offspring (2) placenta — allows nutrients to diffuse from the mother to the embryo (3) uterus — produces testosterone used in egg production (4) ovary — provides a place for the internal development of the embryo

Answers

Answer:

(2) the placenta allows nutrients to diffuse from the mother to the embryo.

Explanation:

The placenta is a shared organ between the mother and the embryo. It diffuses the necessary nutrients from the mother to the future baby and the residues from this one to the mother, so that she can expel them. The placenta separates the mothers and the embryo blood, but it allows the diffusion of said nutrients and wastes through especial parts of the placenta with thin walls.

why are plant cells undergoing cell division do not have a vacuole? Please answer this question within 1-2 hour/s

Answers

Answer:

because they can

Explanation:

The cell theory applies to all organisms, including the five shown below. Which of the following statements describes how these organisms are an example of the cell theory? A. The organisms have cells that lack a nucleus. B. The organisms are made of one or more cells. C. The cells of the organisms undergo photosynthesis. D. The cells of the organisms are identical to each other.

Answers

Answer:

Its B

Explanation:

ALl of the cells are made from cells so that is the answer hope this helps :)

Which part of the carbon cycle occurs when plants, trees, or fossil fuels are burned?
A. Transpiration B. Oxidation C. Photosynthesis D. Combustion

Answers

Answer:

Combustion.

Explanation:

It's just as it sounds, combustion is the process of burning something. In the carbon cycle, combustion occurs whenever any organic living or non-living thing is burned in the proximity of oxygen, afterwards producing carbon dioxide.

Combustion is the part of the carbon cycle which occurs when plants, trees, or fossil fuels are burned. Thus, the correct option is D.

What is Combustion?

Combustion or burning is a high-temperature exothermic redox chemical reaction which occurs between a fuel and an oxidant. The oxidant is usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. This is one of the major reasons of pollution.

Three main types of combustion include rapid combustion, spontaneous combustion, and explosive combustion.

Therefore, the correct option is D.

Learn more about Combustion here:

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What is the importance of cell membranes to supporting life?

Answers

Answer:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell. And that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell. I hope this helps you :)

The shadow zone exists due to the of seismic waves.
O A. reflection
O B. refraction
O C. absorption
OD. deletion

Answers

Answer:

B. refraction

Explanation: hope this helps!

The shadow zone exists due to the effect of seismic waves is the refraction. Thus, the correct option will be B.

What is Refraction?

Refraction can be defined as the redirection of a wave as it passes from one medium to another medium. The redirection of the waves in a medium can be caused by the wave's change in speed or by a change in the medium of wave.

Seismic waves are the waves which follow the same law of refraction at the compositional boundaries. If the seismic wave velocity in the rock below a boundary is increasing then, the waves will be refracted in the upward direction and this speed up relative to their original path of movement.

Therefore, the correct option will be B.

Learn more about Refraction here:

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What are some helpful and harmful examples of dna mutations

Answers

Answer:

Examples of helpful mutations embrace HIV resistance, milk sugar tolerance, and colored vision.Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes.

A square jaw is recessive to a round jaw (dominant), It is possible for two parents with a square jaw to have a child with a round jaw? Why or Why not?

Answers

No, it would not be possible since both alleles in the genotype are recessive. If the alleles were xx for square jaws, then
x x
x xx xx

x xx xx

would be the possible genotypes for the offspring

Coral needs sunlight to grow. True or false identify if it is false.

Answers

Answer:

Yes ,corals depend on the zooxanthellae (algae) that grow inside of them for oxygen and other things, and since these algae needs sunlight to survive, corals also need sunlight to survive.

Answer:

True

Explanation:

Corals need to grow in shallow water where sunlight can reach them. Corals depend on the zooxanthellae (algae) that grow inside of them for oxygen and other things, and since these algae needs sunlight to survive, corals also need sunlight to survive.

Hope this helps ya!

How many total atoms are present in the compound 2Ca(OH)2 I’ll give brainliest on both

Answers

i think there are 10 atoms present

Which process produces a greater number of offspring? A. Chromosome duplication. B. Asexual reproduction. C. Gamete formation. D. Sexual reproduction.

Answers

Answer:

Sexual reprodution! wheres my cookie?

Explanation: its right i think

Answer:

the answer is C

Explanation:

Hydrotropism
Stimulus = ___________ Response = __________

A sunlight, roots grow downwards
B water, roots grow towards source of water
C plant leaves move away from touch, plant stem grows towards light
D Plant stem grows upward, plant roots grow downward

Answers

Answer:

a,d

Explanation:

Answer:

c

Explanation:

plant leaves move away from touch,plant stem grows towards light

Why are invasive species dangerous to the environment?
A)They pollute the environment.
B)They are always predators.
C)They threaten biodiversity.
D)They bring abiotic factors.

Answers

Answer:

C

Explanation:

They threaten the other animals. They can take their food, homes, and they don't have natural predators.

Invasive species are dangerous to the environment as they threaten the biodiversity. Thus, the correct option is C.

Invasive species are those imported species that are able to thrive rapidly in another foreign area by adapting and reproducing quickly.

Invasive species of plants and animals lead to an increase in the competition for survival, which results in decrease in the population of the native species.

The invasive species also affect the food web that is existing in the particular ecosystem, because of which other all organisms which are part of the food web are affected. They outcompete the native species for food,

Thus, biodiversity is threatened due to the invasive species.

Learn more about invasive species in:

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What is a contribution of biological wildlife​

Answers

Answer: Wildlife biologists are important to the safety and preservation of animal species, but they also benefit society as a whole. They observe animals in their natural habitats and conduct experimental studies to test for environmental hazards, diseases and unusual movement patterns.

Explanation: Mark me brainliest

Answer:

i would love to help you but i cant sorry

Explanation:

The digestion of ___ takes place in the stomach by the actions of enzymes operating at low pH. This digestion continues in the small intestine and the large molecules are broken down into ___.

Answers

Answer:

food          minerals

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