Select the incorrect statement
Male fruit fly is heterogametic.
In male grasshoppers, $50 \%$ of sperms have no sex-chromosome.
In domesticated fowls sex of progeny depends on the type of sperm rather than egg.
Human males have one of their sex-chromosome much shorter than the other.
How is sex determined in human beings?
Delete the odd one:
Which one of the following conditions correctly describes the manner of determining the sex?
While solving the problem of sex determination in large number of insects, it was observed that
The sex chromosomes in females are