Question

Homozygous pure lines in cattle can be obtained by?

• A. Mating of related individuals of the same breed
• B. Mating of unrelated individuals of the same breed
• C. Mating of individuals of different breed
• D. Mating of individuals of different species

Answer 1

The correct option is A

Mating of related individuals of the same breed

The correct option is A.

Explanation of correct option:

1. The mating of related individuals of the same breed is called inbreeding.
2. Homozygosity is increased by inbreeding and is responsible for pure lines production in cattle.

Explanation of incorrect options:

Option B:

1. Mating of unrelated individuals of the same breed is known as outbreeding.

Option C:

1. Mating of individuals of different breeds is known as cross-breeding.

Option D:

1. Mating of individuals of different species is known as interspecific hybridization.

Final answer- Homozygous pure lines in cattle can be obtained by mating of related individuals of the same breed.