A person's karyotype shows 44 autosomes and one X chromosome. What is the best interpretation of this karyotype?
A)The karyotype is aneuploid, and the individual has only one allele for each of the genes on the X chromosome.
B)The karyotype is aneuploid, and the individual is experiencing the pathologic condition of haploidy.
C)The karyotype is euploid, making the individual a genotypic female and a phenotypic male.
D)The karyotype is euploid, making the individual a genotypic male and a phenotypic female.

Question

Quizplus · Accepted Answer

A euploid karyotype for humans has a total of 46 chromosomes, 44 autosomes, and a pair (2) of sex chromosomes. The fact that this karyotype has only 45 chromosomes makes it aneuploid. Because the person is missing a sex chromosome and only one X is present, the person is female but has only one allele for each gene on the X chromosome (and none of the alleles for genes on the Y chromosome).

A Person's Karyotype Shows 44 Autosomes and One X Chromosome