GROWTH DEVELOPMENT CHILD
HEREDITY AND ENVIRONMENT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
RR x Rr
|
|
|
Rr x Rr
|
|
|
rr x RR
|
|
|
rr x Rr
|
Detailed explanation-1: -When Mendel crossed two “true-breeding” pea plants with contrasting traits, why did all the plants from the F1 generation only show one of the traits? All of the F1 generation was heterozygous for the trait.
Detailed explanation-2: -Pea plants can either self-fertilize or cross-fertilize. Crossing two plants is called hybridization. To start, however, Mendel needed plants that were true-breeding. This means that after generations of self-breeding, the pea plant expressed only one version of the trait.
Detailed explanation-3: -Answer and Explanation: Genotype of pure breed purple flowered plant will be PP. Genotype of pure breed white flowered plant will be pp. Therefore, ratio of dominant to recessive phenotype will be 1:0.