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Punnett Squares 7 & 8

Punnett Squares 7 & 8. #7- Human Eye color. Blue eyes is recessive to brown eyes. Use the letter B. Show the expected children (genotypes and phenotypes) of a marriage between a blue-eyed woman and a brown-eyed man who had a blue-eyed mother. Punnett Square #7.

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Punnett Squares 7 & 8

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  1. Punnett Squares 7 & 8

  2. #7- Human Eye color • Blue eyes is recessive to brown eyes. Use the letter B. • Show the expected children (genotypes and phenotypes) of a marriage between a blue-eyed woman and a brown-eyed man who had a blue-eyed mother.

  3. Punnett Square #7 Parent Cross ______________________ X ________________________ Offspring genotypes: Offspring phenotypes:

  4. Punnett Square #8-Skin color • In humans normal skin pigmentation is due to a dominant gene (A) and albinism is due to the recessive allele, (a). • Show the work for the following cross and the genotypes for each person involved. • A normal man married an albino woman and their first child is albino.

  5. Punnett Square # 8 Show the cross: _______________________ X ___________________________ Mother’s genotype: Father’s genotype: Child’s genotype:

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