Zoology Principles of Inheritance and Variation questions from NEET UG 2015.
A colourblind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their sons being colourblind?
A gene showing codominance has
A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offsprings?
A pleiotropic gene
Alleles are:
An abnormal human baby with 'XXX' sex chromosomes was born due to:
How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
In his classic experiments on pea plants, Mendel did not use:
In the following human pedigree, the filled symbols represents the affected individuals. Identify the type of given pedigree. 
Multiple alleles are present:
The movement of a gene from one linkage group to another is called:
The term ''linkage'' was coined by: