Question

D

d
DD
Dd
D
DD
Dd
The Punnett square describes the potential offspring of a cross. What phenotypes will be shown by the offspring?
o A. All offspring will show the recessive phenotype for this trait.
B. All offspring will show the dominant phenotype for this trait.
C. Half of the offspring will show the dominant phenotype and half will show the recessive phenotype.
D. Three fourths of the offspring will show the dominant phenotype and one fourth will show the recessive phenotype.

Answer 1

Three-fourths of the offspring will show the dominant phenotype and one-fourth will show the recessive phenotype.

Step-by-step explanation:

The Punnett square is a tool used to predict the potential offspring of a cross. In this case, the Punnett square indicates that the potential offspring will have two possible phenotypes - the dominant phenotype and the recessive phenotype. In the given Punnett square, there are 3 squares with the dominant genotype (DD, DD, and Dd) and 1 square with the recessive genotype (dd). Therefore, three-fourths (75%) of the offspring will show the dominant phenotype, while one-fourth (25%) will show the recessive phenotype. So, the correct answer is option D: Three fourths of the offspring will show the dominant phenotype and one fourth will show the recessive phenotype.

Answer 2

B. All offspring will show the dominant phenotype for this trait.

Step-by-step explanation:

At least one dominant alelle will be present in all the offspring of the f1 generation, and since it is dominant, it will overshadow the recessive alleles.