Studies of Sex Chromosome Aneuploidy Reveal That ____ Necessary for Survival

Question

Studies of sex chromosome aneuploidy reveal that ____ necessary for survival.
A) the X chromosome is not
B) the Y chromosome is not
C) two copies of the X chromosome are
D) two copies of the Y chromosome are
E) at least one copy of both the X and the Y chromosome is

Accepted Answer

The Y chromosome is not necessary for survival, as evidenced by individuals with Turner syndrome, who have only one X chromosome (XO) and are viable, though they may have certain health issues and infertility. This contrasts with the necessity of at least one X chromosome for survival, due to the essential genes it carries.