Which of following ratio between X chromosome and autosomes produces female in Drosophila?
a) An X : A ratio of 0.5 or higher
b) An X : A ratio of 0.5 or lower
c) An X : A ratio of 1.00 or higher
d) An X : A ratio of 1.00 or lower
Which of following ratio between X chromosome and autosomes produces male in Drosophila?
a) An X : A ratio of 0.5 or higher
b) An X : A ratio of 0.5 or lower
c) An X : A ratio of 1.00 or higher
d) An X : A ratio of 1.00 or lower
Sex Linkage:
Who made the first demonstration of a sex-linked trait in 1910?
a) Carl Correns
b) Gregor Mendel
c) T.H. Morgan
d) Sturtevant
In 1910, T. H. Morgan for the first time demonstrated sex-linked trait in…….
a) garden pea plant
b) human
c) Drosophila
d) butterfly
Explanation: Drosophila is a common fruit fly
In Morgan’s experiment on Drosophila in 1910, which of the following trait occurs in coordinate fashion (linked) with sex?
a) wing size
b) body colour
c) eye colour
d) eye size
