MIDTERMS Quiz 3

Question 1

Which chromosome determines the sex of an individual in humans?

Answer 1

Y chromosome

Question 2

Which of the following is a sex-linked disorder?

Answer 2

Hemophilia

Question 3

Why are males more likely to express X-linked recessive traits?

Answer 3

They inherit only one X chromosome

Question 4

What is an example of a Y-linked trait?

Answer 4

SRY gene

Question 5

In a pedigree chart, what does a square represent?

Answer 5

Male

Question 6

Which of the following is a common X-linked recessive disorder?

Answer 6

Red-green color blindness

Question 7

What type of inheritance pattern does hemophilia follow?

Answer 7

X-linked recessive

Question 8

If a mother is a carrier for color blindness (X-linked recessive) and the father is not color-blind, what is the chance of their son being color-blind?

Answer 8

50%

Question 9

What does it mean if a trait is “sex-linked”?

Answer 9

It is located on one of the sex chromosomes

Question 10

Which chromosome carries most sex-linked traits in humans?

Answer 10

X