Principle Of Inheritance And Variation Question 377
Question: Drosophila flies with XXY genotype are females but in case of humans, such individuals are abnormal males (Klinefelter’s syndrome). This indicates that:
Options:
A) The Y chromosome has no role in sex determination.
B) In Drosophila, the Y chromosome is essential for sex determination.
C) The Y chromosome is male determining in humans.
D) The Y chromosome is female determining in Drosophila.
Show Answer
Answer:
Correct Answer: C
Solution:
[c] In human, the Y chromosome bears the androgenic factor or the male determining factor.
Whereas, in Drosophila, the ratio of sex chromosomes to autosomes is the factor determining sex of the individual.
BETA
