7) Find the false statement. a) A Barr body is an inactivated X chromosomes in f

Question

7) Find the false statement.

a) A Barr body is an inactivated X chromosomes in females.

b) A person with XO sex chromosomes would suffer from Turner syndrome and would look

female.

c) A person with XXY sex chromosomes would suffer from Klinefelter syndrome and would look

male.

d) A person with YO sex chromosomes would appear male.

e) Genetic mapping looks at the frequency of recombination (crossing-over) of two genes on the

same chromosome to determine their relative distance.

f) Only egg cells contribute mitochondria (and mitochondrial DNA) to the zygote. Sperm cells do

not.

Explanation / Answer

d) A person with YO sex chromosomes would appear male.

This statement is false because YO condition is fatal for human beings. Every person requires at least one X chromosome to survive.

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