Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross is known as:

1. Test cross

2. Reciprocal cross

3. Dihybrid cross

4. Reverse cross

The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes:

1. Seven

2. Six

3. Five

4. Four

Which one of the following traits of garden peas studied by Mendel was a recessive feature?

Which one of the following conditions, though harmful in itself, is also a potential saviour from a mosquito-borne infectious disease?

Pattern baldness, moustaches, and beard in human males are examples of:

1. Sex-linked traits

2. Sex-limited traits

3. Sex-differentiating traits

4. Sex-determining traits

When a cluster of genes shows linkage behaviour they:

1. Do not show a chromosome map

2. Show recombination during meiosis

3. Do not show independent assortment

4. Induce cell division

Christmas disease is another name for:

1. Haemophilia B

2. Hepatitis B

3. Down's syndrome

4. Sleeping sickness

In Drosophila, the sex is determined by:
 

A genetic map is one that:

1. Establishes sites of the genes on a chromosome

2. Establishes the various stages in gene evolution

3. Shows the stages during the cell division

4. Shows the distribution of various species in a region

Independent assortment of genes does not take place when: