Question

If your dad is homozygous recessive for eye color and your mom is heterozygous,

what is the probability that the offspring will have BROWN eyes.

What is the probability that the offspring will have BLUE eyes?

Answer 1

Answer:

brown eyes in offspring

Answer 2

Explanation:

As per the given question, Dad is found to be homozygous recessive for blue eye color(bb) and mom is heterozygous (Bb) but her eye color will be brown as blue eye color will be expressed only when both the alleles are recessive.

$\clubsuit \:$ Note:

• Brown eye color is a homozygous/ heterozygous dominant trait.
• Blue eye color is a homozygous recessive trait.

The cross between Bb and bb can give rise to four probable offsprings with the genotypes

• Bb (Brown eye)
• Bb (Brown eye)
• bb  (Blue eye)
• bb  (Blue eye)

From the above cross, we can conclude that 50% of the offsprings can be brown-eyed or 50 % of them can be blue-eyed.

Hence, the probability of the offspring turning brown-eyed will be 1/2.

Similarly,

The probability of the offspring turning blue-eyed will also be 1/2.