Principles of Inheritance and Variation PYQ — Page 4
NEET UG Zoology — Principles of Inheritance and Variation previous year questions with solutions.
All Principles of Inheritance and Variation Questions (192)
A pleiotropic gene
An abnormal human baby with 'XXX' sex chromosomes was born due to:
The movement of a gene from one linkage group to another is called:
A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offsprings?
How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
Multiple alleles are present:
The term ''linkage'' was coined by:
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?
Alleles are:
In the following human pedigree, the filled symbols represents the affected individuals. Identify the type of given pedigree. 
A gene showing codominance has
In his classic experiments on pea plants, Mendel did not use:
Fruit color in squash is an example of:
A human female with Turner's syndrome
A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?
If two persons with 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group : 'AB' blood group : 'B' blood group in $1: 2: 1$ ratio. Modern technique of protein electrophoresis reveals presence of both 'A' and ' $B$ ' type proteins in 'AB' blood group individuals. This is an example of
Which one is the incorrect statement with regard to the importance of pedigree analysis?
Which Mendelian idea is depicted by a cross in which the $F_1$ generation resembles both the parents?
The incorrect statement with regard to haemophilia is
Down's syndrome in humans is due to:
Which of the following statements is not true of two genes that show $50 \%$ recombination frequency?
In our society women are blamed for producing female children. Choose the correct answer for the sex-determination in humans.
If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an example of this pattern? 