Which of the chromosomal formulation is responsible for the expression of meta-male character in Drosophila ?

Which of the chromosomal formulation is responsible for the expression of meta-male character in Drosphila

Bar eye character in Drosophila is due to

Which hormone is responsible for the set in of secondary sexual characters in males ?

Assertion: According to Bridges, the Y-chromosome is responsible only for the fertility of sex and not for sex determination in Drosophila. Reason: According to Bridges in Drosophila, autosomes are responsible for feminine characteristics.

Which chromosome is responsible to from a male child?