1. If a set of parents both have Bb genotypes, how many different types of zygotes can they form?
CHOICES:
A. one. B. Two C. three.D four
2. Having black hair is represented by the following alleles: A, B, and C. Which of the following genotypes represent the alleles of having brown hair?
CHOICES:
A. aabbcc
B. AaBbcc
C. AAbbcc
D. AABBCC
3. Two parents have normal vision, but their son is born colorblind.
What must be the mother's genotype using XB for normal and Xb for color-blind
vision?
B. XBXB
C. XBXb
D. XbXb
A. XX
4. The colorblind son grows up and marries a woman with normal vision. She does not carry the colorblind allele. Their genotypes are XbYb and XBXB,respectively. By using the Punnett square solve for the percentage of the
CHOICES:
A.0%
B. 25%
C. 50%
D. 75%
5. Which of the following traits is NOT controlled by multiple genes?
A.colorblindness
C. freckles
B.eye color
D. hair texture
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