The expression of genes for the production of milk in only females is a

In plants,cytoplasmic male sterility is generally located in which of the following?

What is the reason for the appearance of walnut-comb in the offspring resulting from a cross between pea-comb and rose-comb in chickens?

In sweet pea plants,the presence of dominant $C$ and $P$ genes is essential for the development of purple colour. The ratio of plants producing flowers of different colours in the progeny of the cross $CcPp \times Ccpp$ will be:

The inheritance of cytoplasmic genes in organisms is possible through:

The coiling of the shell in the snail $Limnaea$ is an example of.....