Inbreeding

Q.

Homozygous pure lines in cattle can be obtained by?

1. Mating of related individuals of the same breed

2. Mating of unrelated individuals of the same breed

3. Mating of individuals of different breed

4. Mating of individuals of different species

Q. What effect will inbreeding tend to have on genotypic frequencies in a population?

1. It will increase the frequency of genotypes that produce a dominant phenotype
2. It will decrease the frequency of genotypes that produce a dominant phenotype
3. It will increase the frequency of homozygous genotypes
4. It will increase the frequency of heterozygous genotypes

Q. Which of the following is not true for inbreeding?

1. It causes inbreeding depression after a few generations.
2. It always increases the productivity.
3. It is used to produce a pure line.
4. It leads to homozygosity.