In XO-XX type of sex determination pattern, sex of the offspring depends on which of the following?
a) male (XO)
b) female (XX)
c) both a and b
d) none of them
What will be the sex of the offspring if egg is fertilized by sperm having X chromosome?
a) male
b) female
c) both a and b
d) none of them
Explanation: X from sperm and X from egg unite and form XX which will be female
What will be the sex of the offspring if egg is fertilized by sperm having no X chromosome?
a) male
b) female
c) both a and b
d) none of them
Explanation: no sex chromosome from sperm and X from egg unite and form XO which will be male
What is the ratio between male and female offspring in XO-XX type sex determination pattern?
a) 1:2
b) 1:1
c) 2:1
d) 1:3
Which of the
following male/s has/have only one sex chromosome?
a) human
b) Drosophila
c) moths
d) none of these
Explanation: grasshopper male has one sex chromosome (XO-XX type)
Which of the following sex determination pattern is found in human and many other organisms?
a) XO-XX Type
b) XY-XX Type
c) XX-XY Type
d) WZ-ZZ Type
