Question

In humans, the genetic basis for determining the sex "male" is accomplished by the presence of

________.
A) one X chromosome
B) multiple alleles scattered throughout the autosomes
C) a balance between the number of X chromosomes and the number of haploid
D) a portion of the Y chromosome

Answer 1

The genetic basis for determining the sex "male" is accomplished by a portion of the Y chromosome. Human males have one X chromosome and one Y chromosome (XY), while females have two X chromosomes (XX). The Y chromosome contains the sex-determining region Y gene (SRY) that triggers the development of male characteristics.

Step-by-step explanation:

In humans, the genetic basis for determining the sex "male" is accomplished by the presence of a portion of the Y chromosome. Human males have one X chromosome and one Y chromosome (XY), whereas females have two X chromosomes (XX). The Y chromosome contains a small region called the sex-determining region Y gene (SRY) that triggers the development of male characteristics. Without the Y chromosome and the SRY gene, an individual develops into a female.