The pedigree shows the inheritance of red-green color blindness in a family. If II 3 marries a color-blind man, what is the probability that her first child will be normal?

1.	¼	2.	½
3.	2/3	4.	¾

The blood groups possible in progeny of a type A mother and a type AB father can be
1. A, B, AB, and O
2. A, B, and AB
3. A and AB
4. A only

The pedigree shown below cannot be:

The recombination frequencies for four different linked genes of Drosophila are shown in the figure:

The order of the four genes will be:

In a fruit fly, the eye colour trait is located on X-chromosome and the vestigial wing trait is located on an autosome. What is the possibility that a cross between a white-eyed male fruit fly with vestigial wings and a wild-type female who is heterozygous for both traits will result in a female offspring with vestigial wings and white eyes?

A dihybrid test cross results in a 1.2% frequency of recombination. This implies that:
1. genes are located on sex chromosomes.
2. genes are located on heterologous chromosomes.
3. genes exhibit epistatic two factor interaction.
4. genes are located very close to one another on the same chromosome.

In heterozygous condition, the dominant allele is able to express itself only in one sex. This is a
1. A sex limited trait
2. A sex influenced trait
3. A sex linked trait
4. sex-determining trait.

Given below are different levels of organization of genetic material. Arrange them in the correct descending order of their size:

Which field of genetics is the oldest?
1. Transmission genetics.
2. Molecular genetics.
3. Population genetics.
4. Developmental genetics.

‘Molecular genetics’ will be concerned with
1. Production of a new mutant allele of an interesting gene.
2. Hybridizing different varies of plant species
3. studying general allele frequency in a population
4. classification of newly discovered species