Brown/Blue Eyes

Question

Assume that brown eyes are dominant to blue eyes.

B - brown

b - blue

Question at position 29
29

Multiple Choice
1 point



Question at position 29

Can two brown-eyed people produce a child with blue eyes?

Can two brown-eyed people produce a child with blue eyes?

yes

no

Question at position 30
30

Multiple Choice
1 point



Question at position 30

Which of the following scenarios could result in a child with blue eyes?

Which of the following scenarios could result in a child with blue eyes?

both parents are homogenous dominanton

both parents are heterogeneous

one parent is homogenous dominant and one is homogeneous recessive

Answer 1

29. Can two brown-eyed people produce a child with blue eyes?
    Answer: No
    Explanation: If both parents are homozygous dominant (BB), they can only pass on the dominant allele (B), which means they cannot have a child with blue eyes (bb). If both parents are heterozygous (Bb), there is a possibility of producing a child with blue eyes, but the question specifies "two brown-eyed people," which generally implies they are homozygous dominant.

30. Which of the following scenarios could result in a child with blue eyes?
    Answer: Both parents are heterogeneous (Bb)
    Explanation: If both parents are heterozygous (Bb), there is a possibility of producing a blue-eyed child (bb) through the following possible combinations: BB, Bb, Bb, and bb.
    The scenario of one parent being homozygous dominant (BB) and the other being homozygous recessive (bb) would also produce a blue-eyed child (bb). Thus, while "both parents are heterogeneous" can result in blue eyes, the accurate statement according to typical nomenclature would allow for the combination of Bb with bb as well.