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Inbreeding increases...

Inbreeding increases

A

Heterozygosity

B

Homozygosity

C

Heteophilly

D

None

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Inbreeding**: Inbreeding is the mating of closely related individuals, which can lead to the production of offspring that are genetically similar. 2. **Effect of Inbreeding on Genetic Variation**: When inbreeding occurs over several generations (typically 4 to 6), it tends to increase homozygosity. This means that the offspring are more likely to inherit the same alleles from both parents, resulting in a higher proportion of homozygous individuals. 3. **Homozygosity vs. Heterozygosity**: - **Homozygosity** refers to having two identical alleles for a particular gene (e.g., TT or tt). - **Heterozygosity** refers to having two different alleles for a gene (e.g., Tt). Inbreeding reduces heterozygosity because it limits the genetic diversity of the population. 4. **Consequences of Increased Homozygosity**: While inbreeding can lead to the establishment of pure lines with desirable traits, excessive inbreeding can result in inbreeding depression. This is a reduction in fitness and vigor due to the accumulation of deleterious alleles and lack of genetic diversity. 5. **Conclusion**: Inbreeding increases homozygosity, which is the correct answer to the question posed. **Final Answer**: Inbreeding increases homozygosity. ---
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Study the following statements regarding inbreeding and select the incorrect ones. (i) The inbreeding strategies allow the desirable qualities of two different breeds to be combined. (ii) It increases homozygosity. (iii) It also helps in elimination of less desirable genes. (iv) Continued inbreeding increases fertility and productivity.

Go through the following statements regarding inbreeding and select the incorrect ones . (i) The inbreeding strategies allow the desirable qualities of two different breeds to be combined . (ii) It increases homozygosity . (iii) It also helps in elimination of less desirable genes . (iv) Continued inbreeding increases fertility and productivity .

Fill up the blanks in the following paragraph by selecting the correct option. Inbreeding increase ul(i) . This inbreeding is necessary if we want to evolve a ul(ii) in any animal. Inbreeding exposes harmful ul(iii) genes that are eliminated by selection.

Assertion : In breeding increases homozygosity exposing harmful recessive genes, some of which are eliminated by selection. Reason : Continued inbreeding reduces fertility and productivity.

Assertion :- Inbreeding is necessary if we want to evolve a pure line. Reason :- Inbreeding exposes harmful recessive gene that are eliminated by selection .

a) What is inbreeding depression? b) Explain the importance of "selection" during inbreeding in cattle.

Inbreeding depression is -

Inbreeding depression occurs due to