A pea plant with genotype PP (purple flowers) mates with a plant with the genotype pp (white flowers). The dominant allele P codes for purple flowers. The possibility that the offspring will have purple flowers is . If an offspring from this cross mates with a pp, the possibility of homozygous dominant genotype for the flowers will be .

Respuesta :

Answer:

The possibility that the offspring will have purple flowers is 100%

The possibility of homozygous dominant genotype for the flowers will be 0%

Explanation:

Answer:

Part A - The possibility that the offspring will have purple flowers is 100%

Part B - The possibility of homozygous dominant genotype for the flowers will be 0%

Explanation:

There are two parts of this question

Part A - A pea plant with genotype PP (purple flowers) mates with a plant with the genotype pp (white flowers)

The cross will be between PP x pp

The following offspring will be produced from the cross between  PP x pp

Pp, Pp, Pp, Pp

All the offspring are heterogyzous purple in color. Thus the possibility that the offspring will have purple flowers will be equal to number of offspring with purple color divided by total number of offspring.

[tex]\frac{4}{4} * 100\\100[/tex]%

Part B- When an offspring from above cross is mated with pp

The cross will be between Pp x pp

The following offspring will be produced from the cross between  Pp x pp

Pp, Pp, pp, pp

Out of four offspring, none of the offspring are homozygous dominant

Thus, the possibility of homozygous dominant genotype for the flowers will be equal to number of homozygous dominant offspring/total number of offspring.

[tex]\frac{0}{4} * 100\\= 0\\[/tex]%