white feathers (recessive). according to the punnett square for this cross, what percentage of offspring is…

white feathers (recessive). according to the punnett square for this cross, what percentage of offspring is predicted to have blue feathers? 25 percent 50 percent 75 percent 100 percent

white feathers (recessive). according to the punnett square for this cross, what percentage of offspring is predicted to have blue feathers? 25 percent 50 percent 75 percent 100 percent

Answer

Explanation:

Step1: Assume blue is dominant (B) and white is recessive (b).

Let the white - feathered bird have genotype bb. If the blue - feathered bird is heterozygous (Bb), when we do a Punnett - square cross (Bb x bb).

Step2: Set up the Punnett square.

The possible gametes from the Bb parent are B and b, and from the bb parent are b and b. The Punnett - square will have two rows and two columns. The combinations are Bb, Bb, bb, bb.

Step3: Calculate the proportion of blue - feathered offspring.

Blue - feathered offspring have the genotype Bb. Out of 4 possible genotypes in the Punnett - square, 2 are Bb. So the proportion is $\frac{2}{4}=0.5$ or 50%.

Answer:

50 percent