Y-Linked Inheritance

Description: Y-Linked Inheritance Quiz
Number of Questions: 15
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Tags: genetics y-linked inheritance
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What is the term for the inheritance of traits that are located on the Y chromosome?

  1. Y-linked inheritance

  2. X-linked inheritance

  3. Autosomal inheritance

  4. Mitochondrial inheritance


Correct Option: A
Explanation:

Y-linked inheritance is the inheritance of traits that are located on the Y chromosome. The Y chromosome is one of the two sex chromosomes in humans, and it is passed from father to son.

Which of the following is an example of a Y-linked trait?

  1. Red-green color blindness

  2. Hemophilia

  3. Cystic fibrosis

  4. Sickle cell anemia


Correct Option: A
Explanation:

Red-green color blindness is an example of a Y-linked trait. It is a condition in which a person is unable to distinguish between certain colors, such as red and green.

How are Y-linked traits inherited?

  1. From father to son

  2. From mother to daughter

  3. From father to daughter

  4. From mother to son


Correct Option: A
Explanation:

Y-linked traits are inherited from father to son. This is because the Y chromosome is passed from father to son.

What is the probability that a son will inherit a Y-linked trait from his father?

  1. 50%

  2. 25%

  3. 75%

  4. 100%


Correct Option: D
Explanation:

The probability that a son will inherit a Y-linked trait from his father is 100%. This is because the Y chromosome is always passed from father to son.

What is the probability that a daughter will inherit a Y-linked trait from her father?

  1. 50%

  2. 25%

  3. 75%

  4. 0%


Correct Option: D
Explanation:

The probability that a daughter will inherit a Y-linked trait from her father is 0%. This is because the Y chromosome is only passed from father to son.

Which of the following is a Y-linked gene?

  1. SRY

  2. BRCA1

  3. CFTR

  4. HBB


Correct Option: A
Explanation:

SRY is a Y-linked gene that encodes the sex-determining region Y protein. This protein is responsible for triggering the development of male sex organs.

What is the function of the SRY gene?

  1. To trigger the development of male sex organs

  2. To trigger the development of female sex organs

  3. To produce sperm

  4. To produce eggs


Correct Option: A
Explanation:

The function of the SRY gene is to trigger the development of male sex organs. This protein is responsible for initiating the cascade of events that leads to the formation of male reproductive structures.

What is the name of the condition that results from a mutation in the SRY gene?

  1. Klinefelter syndrome

  2. Turner syndrome

  3. Androgen insensitivity syndrome

  4. Swyer syndrome


Correct Option: D
Explanation:

Swyer syndrome is a condition that results from a mutation in the SRY gene. This condition is characterized by the presence of female external genitalia and the absence of internal reproductive organs.

Which of the following is a Y-linked genetic disorder?

  1. Hemophilia A

  2. Cystic fibrosis

  3. Sickle cell anemia

  4. Huntington's disease


Correct Option: A
Explanation:

Hemophilia A is a Y-linked genetic disorder that is characterized by a deficiency of clotting factor VIII. This condition can lead to excessive bleeding.

What is the probability that a son of a hemophiliac father and a carrier mother will inherit hemophilia?

  1. 50%

  2. 25%

  3. 75%

  4. 100%


Correct Option: A
Explanation:

The probability that a son of a hemophiliac father and a carrier mother will inherit hemophilia is 50%. This is because the father has a 50% chance of passing on the Y chromosome that carries the hemophilia gene.

What is the probability that a daughter of a hemophiliac father and a carrier mother will inherit hemophilia?

  1. 50%

  2. 25%

  3. 75%

  4. 0%


Correct Option: D
Explanation:

The probability that a daughter of a hemophiliac father and a carrier mother will inherit hemophilia is 0%. This is because the daughter will only receive an X chromosome from her father, and the X chromosome does not carry the hemophilia gene.

Which of the following is a treatment for hemophilia?

  1. Blood transfusions

  2. Factor replacement therapy

  3. Gene therapy

  4. All of the above


Correct Option: D
Explanation:

All of the above are treatments for hemophilia. Blood transfusions can provide the clotting factors that are missing in the blood of hemophiliacs. Factor replacement therapy involves injecting the clotting factors that are missing in the blood of hemophiliacs. Gene therapy is a new treatment that involves introducing a normal copy of the hemophilia gene into the cells of hemophiliacs.

What is the prognosis for hemophilia?

  1. Good

  2. Poor

  3. Depends on the severity of the condition

  4. Depends on the treatment received


Correct Option:
Explanation:

The prognosis for hemophilia depends on the severity of the condition and the treatment received. With proper treatment, most people with hemophilia can live full and active lives.

What is the most common Y-linked genetic disorder?

  1. Hemophilia A

  2. Cystic fibrosis

  3. Sickle cell anemia

  4. Huntington's disease


Correct Option: A
Explanation:

Hemophilia A is the most common Y-linked genetic disorder. It is a condition in which a person is unable to produce clotting factor VIII, which is necessary for blood clotting.

What is the name of the gene that encodes clotting factor VIII?

  1. F8

  2. F9

  3. VWF

  4. FIX


Correct Option: A
Explanation:

The name of the gene that encodes clotting factor VIII is F8.

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