Question

When ‘Aa’ is crossed with ‘aa’, (A is dominant over a) 1 point all the offspring will have dominant phenotype. all the offspring will have recessive phenotype. 50% of offspring will have dominant phenotype and 50% will have recessive phenotype. 75% of offspring will have dominant phenotype and 50% will have recessive phenotype.

Answer 1

50% of offspring will have a dominant phenotype and 50% will have a recessive phenotype.

Explanation:

Phenotype is defined as the characters that can be seen or observed. For example Height, eye colour.

To determine the phenotype of the F1 generation, we use the Punnett square.

Parents Aa, aa

We get the genotype of offspring: Aa, Aa, aa, aa

As A is dominant over a,

Aa will show dominant characteristics

aa will show recessive characteristics.