Question

Select the incorrect statement.

• A. In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.
• B. Human males have one of their sex-chromosome much shorter than the other.
• C. Male fruit fly is heterogametic.
• D. In male grasshoppers. 50% of sperms have no sex-chromosome.
• E. The male fruitfly is not heterogametic

Answer 1

Answer: (A)

Birds show ZZ-ZW type of sex determination, where male birds are homogametic (ZZ) and female birds are heterogametic (ZW). Sex chromosomes of birds are represented by ZZ-ZW. Since the female is heterogametic, the sex of progeny is determined by the type of egg rather than the sperm.