Biology, 05.05.2020 05:07 blaizelange4296

1. A geneticist crosses a fruit fly that has vestigial wings, an ebony body color and legs for antennae with a fruit fly that is homozygous dominant for wing shape, body color and antennae shape.
a. What is the probability that their offspring will have normal wings?

b. What is the probability that their offspring will have the wild type body color?

c. What is the probability that their offspring will have normal antennae?

d. What is the probability that their offspring will have the following three traits: normal wings, the wild type body color and normal antennae?

e. What is the probability that their offspring will show the recessive phenotype for all three characters (i. e. vestigial wings, ebony body color, and legs for antennae)?

2. Consult the table of characters at the end of this worksheet. A woman with blue eyes, heterozygous for dimples and has a straight hairline has a child with a man with blue eyes, no dimples, and is heterozygous for a widow’s peak.
a. What is the probability that their child has blue eyes, dimples and a widow’s peak?

b. What is the probability that their child has brown eyes, dimples and a widow’s peak?

Use the sum rule to answer the following questions.
3. Consult the table of characters at the end of this worksheet. A couple is pregnant with a child. The mom has blue eyes and is heterozygous for dimples. The dad has brown eyes and no dimples.
a. What is the probability that the child will be either homozygous dominant or heterozygous for eye color?

b. What is the probability that the child will be homozygous dominant or heterozygous for dimples?

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