Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

A fruit fly heterozygous for sex-linked genes, is mated with normal female fruit fly. Male specific chromosome will enter egg cell in the proportion.

Evolution of different species in a given area starting from a point and spreading to other geographical area is known as:

Which of the following organism is useful in the preparation of roquefort cheese

Colour blindness is a disease usually affecting man but the factor for it is transmitted to the children always by woman. This is because particular factor is located on

In retroviruses, RNA dependent DNA polymerase synthesizes:

Which of the following correctly defines a transgenic animal

The existence of marsupials in Australia and New Zealand prove

Assertion : Insects visit flower to gather honey.
Reason : Attraction of flowers prevents the insects from damaging other parts of the plant.

Acrosome reaction in sperm is triggered by.