Hybrid vigour is due toa)Emasculationb)Linkagec)Homozygosityd)HeterozygosityCorrect answer is option 'D'. Can you explain this answer?

Question

Hybrid vigour is due toa)Emasculationb)Linkagec)Homozygosityd)HeterozygosityCorrect answer is option 'D'. Can you explain this answer?

Answer

Hybrid vigour is heterozygosity or...
hybrid vigour is also known as the outbreeding enhancement ,an offspring can be heterotic (heterozygosity) when its traits are enhanced as a result of mixing the genetic contribution of its parents ...

Answer

Heterozygous

. A diploid organism is heterozygous at a gene locus when its cells contain two different alleles (one wild-type allele and one mutant allele) of a gene. The cell or organism is called a heterozygote specifically for the allele in question, and therefore, heterozygosity refers to a specific genotype.

Answer

Heterozygosity is increased vigours, growth, yield or function of a hybrid over the parents resulting from crossing of genetically unlike organisms

Answer

Heterozygous is defined as the Genes come in pairs called alleles this pair is located in a specific position on a chromosome. .When alleles are heterozygous they are unalike in some way. Alleles determine the genotype, or genetic structure.

Answer

Increasing heterozygosity means over dominance of desirable genes,over the phenotypic trait.and masking of less desirable genes.incerase in heterozygousity have the higher  mean value ,which is proportional to the increasing in production rate

Answer

Hybrid vigor, also known as heterosis, refers to the superior performance or traits observed in hybrid offspring compared to their parents. This phenomenon occurs due to heterozygosity, which is the presence of different alleles at a specific gene locus.

Explanation:
Hybrid vigor is primarily attributed to the fact that the hybrid offspring inherit different alleles from each parent. This results in increased genetic diversity, which can have several positive effects on the hybrid's traits and overall performance. Here is a detailed explanation of why heterozygosity leads to hybrid vigor:

1. Increased Genetic Diversity:
- When two different parental lines with distinct genetic backgrounds are crossed, the resulting hybrid offspring inherit a combination of alleles from both parents.
- This increased genetic diversity can lead to a broader range of genetic combinations in the hybrid, increasing the potential for beneficial traits to be expressed.

2. Complementary Gene Interactions:
- In some cases, the alleles inherited from each parent can interact in a complementary manner, resulting in enhanced trait expression.
- For example, if one parent has alleles that promote disease resistance and the other parent has alleles that enhance growth rate, the hybrid offspring may exhibit both increased resistance to diseases and rapid growth.

3. Masking of Recessive Alleles:
- In a heterozygous state, dominant alleles often mask the expression of recessive alleles.
- If one parent carries a recessive allele associated with a negative trait, but the other parent carries a dominant allele that suppresses its expression, the hybrid offspring will not display the negative trait.

4. Overdominance:
- Overdominance occurs when the hybrid offspring exhibit traits that are superior to those of both parents.
- This can happen when the combination of alleles at a specific gene locus leads to a more advantageous phenotype.
- For instance, if one parent has alleles associated with high yield but low disease resistance, and the other parent has alleles associated with low yield but high disease resistance, the hybrid offspring may display both high yield and high disease resistance.

In conclusion, hybrid vigor is primarily due to heterozygosity, as it allows for increased genetic diversity, complementary gene interactions, masking of recessive alleles, and the potential for overdominance. These factors contribute to the superior performance and traits observed in hybrid offspring compared to their parents.

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