Principles of I...

Which organism’s male contain a pair of Z chromosome as sex chromosome besides autosomes?

Linkage is the

Male heterogamety is present in

Alfred Sturtevant used the frequency of recombination between genes on same chromosome as measure of the distance between

In our society, female are blamed for producing female children due to

In birds, female has been designed to be the Z and W chromosomes. In these organism female have

Two genes p and q showing 1.3% of recombination while other two genes x and y show 37.2 percent of recombination. Which pair of genes is close to each other?

Assertion: In human beings, 23 pairs of chromosomes are present in diploid cells.
Reason: 22 pairs of chromosomes are equal in male and female but a pair sex chromosome is different in them.

In XO type of sex determination
a. Some sperms bears X-chromosome where as some do not.
b. Numbers of male and female chromosomes are equal.
c. An egg fertilized by sperms having X-chromosome becomes female.