BIOLOGY HIGH SCHOOL

For most genes on the human X chromosome, what percent of XY males with a mutant allele on the X chromosome will express the mutant phenotype? A., 0%
B., 25%
C., 50%
D., 100%
E., There is insufficient data to predict

Answers

Answer 1
Answer:

Answer:

D. 100%

Explanation:

In humans, males have only one copy of the X chromosome in their cells. Therefore, human males express all the X-linked genes present on their X chromosomes irrespective of the recessive or dominant nature of the allele. This occurs since males do not have one more copy of the X chromosome to carry another allele for the gene. So, all the X-linked alleles present on the X-chromosomes of the human males are expressed.

For example, human males with genotype X^cY and X^hY express colorblindness and hemophilia respectively. Though, human females express these recessive X-linked disorders in homozygous genotype only.


Related Questions

HIGH SCHOOL

What term is used to describe a species whose population is rapidly decreasing and may disappear completely?

Answers

Endangered species term is used to describe a species whose population is rapidly decreasing and may disappear completely.

What do you mean by endangered species?
  • "A species of animal or plant that is seriously at risk of extinction."
  • Some examples of endangered species include: red panda, Asiatic lion, etc.
  • Red data book of IUCN contains list of endangered species.
  • If they became extinct then it may obstruct the food chain of others as well.
  • Extinction of one species results in extinction of others species too.

Hence, the answer is endangered species.

To know more about endangered species here

brainly.com/question/10415903

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When a species is in danger of extinction they are known as endangered, such as the tiger.
MIDDLE SCHOOL

A breeding pair of rabbits escaped from their cage behind a farmer’s barn. The farmer observed the rabbits and kept data on their population size for ten years. During this time, the rabbits reproduced and their offspring reproduced many times. The fenced, undisturbed two acres where the rabbits live support populations of predators, such as hawks and snakes, as well as a limited supply of grass and water. At the end of the ten years, the farmer graphed the data he collected. Which of the following best describes his graph? Question 3 options:

The graph is generally J shaped showing exponential growth.

The graph is generally S shaped showing logistic growth.

The graph is a horizontal line showing the effects of predation.

The graph angles up in a straight line at 45° showing the effects of ample resources.

Answers

Answer:

The graph is generally S shaped showing logistic growth.

Explanation:

The graph of the farmer will be generally S shaped showing logistic growth.

There are two types of population growth:

  • The logistic growth (S shaped)
  • The exponential growth (J shaped)

For the logistic growth, the population grows gradually as organisms try to establish themselves in their new environment. After getting acclimatized with the environment, the population grows more rapidly and then levels off due to limited factors such as predation and competition for foods. The point of leveling off is refers to as the carrying capacity (k).

For the exponential growth, the population of organisms continue to grow rapidly indefinitely after getting acclimatized with the environment. This type of growth only occur in the absence of population limiting factors.

In this case, after acclimatization and rapid growth of the rabbit's population, the population then levels off due to limited supply of grass and water as well as predation by hawks and snakes.

Hence, the graph for population growth will be S shaped showing logistic growth.

Answer:

I think the answer is B

Explanation:

Because using logic on this situations is best idk

COLLEGE

_____ is the correct cpt code for a cholecystectomy using a right subcostal incision for exploration of common duct, with choledochoenterostomy.

Answers

 47612

A current Procedural Terminology (CPT) code is a medical code that describes or emphasize precisely on the service a health care provider has performed for a patient. CPT describes medical, surgical, and diagnostic services and it also help to pass uniform information about medical services among health workers and patients.






HIGH SCHOOL

What following organisms is considered to be an exception to the cell theory

Answers

A virus, because it has a non-cellular structure.
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