Question

A pea plant is the F1 offspring of a true-breeding plant with purple flowers and a true-breeding plant with white flowers. This plant is crossed with one that has white flowers (recessive). How many of the plants in the next generation will have white flowers?

Answer 1

Answer:

To determine the results for white flowers, first let us have a look at the genotype of the F1 offspring being crosses with the white flower.

When a true breeding purple plant will be crossed with a true breeding white plant, the offsprings produced will all be heterozygous for purple colour. This result can be depicted from the following punnet square:

       p          p

P     Pp      Pp

P    Pp       Pp

When a heterozygous purple plant will be crosses with a white flower, the results of the cross will be :

         p             p

P       Pp               Pp

p       pp                pp

The results show that about 50% of the plants produced will have white flowers.

Answer 2

The study of genes and inheritance is called genetics.

The correct answer is none.

What are recessive genes?

• Those genes which can not able to show their effect when the dominant gene is present are called recessive genes.

The correct answer is none because during the cross the purple flower is dominant and the white flower is recessive.

• Both the genes are true-breeding

Hence, during the cross, the one gamete of the dominant plant and the one game of the recessive plant will fuse together to form the hybrid plant.

Due to the presence of the dominant genes, the character is shown as purple.

Hence, the correct answer is none.

For more information, about the genes, refer to the link:-

https://brainly.com/question/787658