If VV produces violet flowers and vv produces white flowers, what will be the phenotype and genotype of the F1 progeny?a)All violet; Ttb)All white; ttc)All violet; TT and Ttd)All violet; TT, Tt, and ttCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

The VV and vv upon crossing will produce all progeny with genotype Vv. This is the heterozygous state. Violet being dominant over white, all the progeny will have violet flowers.

Answer

Phenotype and Genotype of the F1 Progeny in a Cross between VV and vv

When considering the phenotype and genotype of the F1 progeny resulting from a cross between VV (produces violet flowers) and vv (produces white flowers), the outcome can be predicted using the principles of Mendelian genetics.

Phenotype refers to the observable physical characteristics of an organism, while genotype refers to the genetic makeup or combination of alleles an organism possesses.

In this case, the dominant allele V produces violet flowers, while the recessive allele v produces white flowers. With this information, we can determine the possible phenotypes and genotypes of the F1 progeny.

1. Understanding the Cross:
- VV (parent 1) x vv (parent 2)

2. Genotypes of the Parents:
- VV (parent 1): homozygous dominant genotype
- vv (parent 2): homozygous recessive genotype

3. Alleles Contributed by Parents:
- Parent 1 (VV): contributes the V allele
- Parent 2 (vv): contributes the v allele

4. Genotypes of the F1 Progeny:
- Since the V allele is dominant over the v allele, the F1 progeny will all inherit at least one V allele from parent 1.
- Therefore, all F1 progeny will have the genotype Vv.

5. Phenotypes of the F1 Progeny:
- The V allele is responsible for the violet flower color, which is dominant over the white flower color produced by the v allele.
- Therefore, all F1 progeny will exhibit the violet flower color phenotype.

In summary, the F1 progeny resulting from a cross between VV and vv will have the genotype Vv and the phenotype of violet flowers. This is because the V allele is dominant over the v allele, leading to the expression of the violet flower color in all F1 progeny.

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