Consider the cross AaBb x AaBb. If the alleles for both genes exhibit complete dominance, what genotypic ratio is expected in the resulting offspring?

1. 1:1:1:1

2. 9:3:3:1

3. 3:6:3:1:2:1

4. 1:2:1:2:4:2:1:2:1

Two phenotypically normal individuals have an affected child. What can we conclude about the parents?

1. they both carried the diesease allele

2. they are not the parents of the child

3. they are affected

4. no conclusions can be drawn

In humans, the dominance relationship between the A and B alleles of ABO blood group gene is an example of

(1) complete dominance.

(2) incomplete dominance.

(3) codominance.

(3) epistasis

For how many years Gregor Mendel conducted hybridisation experiments on garden peas?

(1) 5

(2) 7

(3) 14

(4) 34

James Watson and Francis Crick got Nobel prize in the year

(1) 1960

(2) 1962

(3) 1959

(4) 1953

How many true breeding pea plant varieties had been selected by Mendel?

(1) 1

(2) 7

(3) 14

(4) 16

A true-breeding plant line can be obtained by

(1) Cross pollination

(2) Self pollination

(3) Continuous Cross pollination

(4) Continuous Self pollination

How many pairs of contrasting traits studied by Mendel were related to pod?

(1) 1

(2) 2

(3) 3

(4) 4

Among the given pea plant traits identify the odd one

(1) Violet flower

(2) Yellow seed

(3) Yellow pod

(4) Axial flower position

Which of the following does not contribute to Mendel’s success?

(1) Large sampling size

(2) Statistical analysis

(3) Performed experiments on single variety of pea

(4) Performed experiments on successive generations