NEET-XII-Biology
P1 year:2019
- #121Select the incorrect statement.
(1) Male fruit fly is heterogametic
(2) In male grasshoppers 50% of sperms have
no sex-chromosome
(3) In domesticated fowls, sex of progeny
depends on the type of sperm rather than
egg
(4) Human males have one of their sex-
chromosome much shorter than the otherdigAnsr: 3Ans : ( 3 )
Sol. In birds female heterogamety is found thus sex
of progeny depends on the types of egg rather
than the type of sperm.
Birds
(fowls)
 sperm = A + Z type (100%)
 eggs A + Z (50%)
A + W (50%)
eg.