Question

Пряме волосся в людини-рецесивна ознака.Генопит АА формує фенотип із кучерявим волоссям, а генотип Аа - із хвилястим.Визначте генотип й фенотип детей, батьки яких мають хвилясте волосся.

Answer 1

P: Аа * Аа

G:А: а: А : а

F: АА: Аа: Аа: аа: 

1:2:1

25% кучеряве волосся ; 50% хвилясте, 25% пряме 

Answer 2

Understanding Hair Genetics

In humans, the trait for straight hair is often considered a recessive characteristic, while curly or wavy hair is considered dominant. Let's explore the genetic makeup and phenotypic outcomes for the children of parents with wavy hair.

Genotype and Phenotype of Children

The genotype of the parents is given as Aa, which means one parent carries the dominant allele for wavy hair (A) and the other carries the recessive allele for straight hair (a). When these genotypes are combined, the possible genotypes for the children are AA, Aa, and aa.

The phenotype, or the physical expression of the genotype, is determined by the dominant and recessive alleles. In this case, the dominant allele (A) results in wavy hair, while the recessive allele (a) results in straight hair.

Determining the Genotype and Phenotype of the Children

1. Genotype of Children: - The children can have the following genotypes: - AA (25% chance) - Aa (50% chance) - aa (25% chance)

2. Phenotype of Children: - Based on the genotypes, the phenotypes of the children can be determined as follows: - AA and Aa genotypes will result in wavy hair. - aa genotype will result in straight hair.

Therefore, the children of parents with wavy hair (genotype Aa) can have a mix of wavy and straight hair, with a higher likelihood of having wavy hair due to the dominant nature of the A allele.

Feel free to ask if you have further questions or need additional information!