HEREDITY
MONOHYBRID CROSS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
The dominant allele for height in a particular plant is tall, and the recessive allele is short. If both parents are heterozygous for height, which ratio of offspring will the parents produce based on Mendel’s law of segregation?
|
|
4 tall:0 short
|
|
|
3 tall:1 short
|
|
|
1 tall:3 short
|
Explanation:
Detailed explanation-1: -So, the correct answer is ‘50%".
Detailed explanation-2: -When a plant inherits two dominant alleles for tall stems, its alleles are written as TT. When a plant inherits two recessive alleles for short stems, its alleles are written as tt.
Detailed explanation-3: -The P cross produces F1 offspring that are all heterozygous for both characteristics. The resulting 9:3:3:1 F2 phenotypic ratio is obtained using a Punnett square. In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y).
There is 1 question to complete.