A female whose father was colorblind marries and normal male whose father was also colorblind. What is the probablility that their daughter will be colorblind?

1. 0 %

2. 25 %

3. 50 %

4. 75 %

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

One of the Mendel's pure strains of pea plants had green peas. How many different types of eggs could such a plant produce with regard to pea color?

1. 1

2. 2

3. 4

4. 8

A woman receives her X chromosomes from:

1. Her mother only

2. Her father only

3. Both her mother and father 

4. Mitochondria of mother only

The insertion or deletion of a base pair into the genetic code will cause a frame shift mutation unless the number of base pairs inserted or deleted is:

(1) One

(2) Two

(3) three

(4) Ten

A gene showing codominance has

(1) one allele dominant on the other

(2) alleles tightly linked on the same chromosome

(3) alleles that are recessive to each other

(4) both alleles independently expressed in the heterozygote

In his classic experiments on pea plants, Mendel did not use

(1) seed colour

(2) pod length

(3) seed shape

(4) flower position

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

(1) Five

(2) Six

(3) Eight

(4) Seven

Which one from those given below is the period of Mendel's hybridisation experiments?

(1) 1856 - 1863

(2) 1840 - 1850

(3) 1857 - 1869

(4) 1870 - 1877

Among the following characters, which one was not considered by Mendel in his experiments on pea?

(1) Stem - Tall or Dwarf

(2) Trichomes - Glandular or Non-glandular

(3) Seed - Green or Yellow

(4) Pod - Inflated or Constricted