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VIII. ENRICHMENT ACTIVITY Directions: Answer the following Sex-linked Traits Practice Problems. 1. In fruit flies, the gene for white eyes is sex-linked recessive. (R) is red and (r) is white. Cross a white eyed female with a nommal, red-eyed male. a. What percent of the males will have red eyes? white eyes? b. What percent of the females will have red eyes? white eyes? C. What total percent of the offspring will be white-eyed? d. What percent of the offspring will be carriers of the white eye trait? | RR RR PARENT Rr Rr rr Rr Rr 2. Using the same information as for question #1, cross a heterozygous, red-eyed female with a red-eyed male. a. What are the genotypes of each parent? b. What fraction of the children will have red eyes? C. What fraction of the children will have white eyes? d. What fraction of the female children will carry the white eyed traits

VIII. ENRICHMENT ACTIVITY Directions: Answer the following Sex-linked Traits Practice Problems. 1. In fruit flies, the gene for white eyes is sex-linked recessive. (R) is red and (r) is white. Cross a white eyed female with a nommal, red-eyed male. a. What percent of the males will have red eyes? white eyes? b. What percent of the females will have red eyes? white eyes? C. What total percent of the offspring will be white-eyed? d. What percent of the offspring will be carriers of the white eye trait? | RR RR PARENT Rr Rr rr Rr Rr 2. Using the same information as for question #1, cross a heterozygous, red-eyed female with a red-eyed male. a. What are the genotypes of each parent? b. What fraction of the children will have red eyes? C. What fraction of the children will have white eyes? d. What fraction of the female children will carry the white eyed traits

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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VIII. ENRICHMENT ACTIVITY Directions: Answer the following Sex-linked Traits Practice Problems. 1. In fruit flies, the gene for white eyes is sex-linked recessive. (R) is red and (r) is white. Cross a white eyed female with a nommal, red-eyed male. a. What percent of the males will have red eyes? white eyes? b. What percent of the females will have red eyes? white eyes? C. What total percent of the offspring will be white-eyed? d. What percent of the offspring will be carriers of the white eye trait? | RR RR PARENT Rr Rr rr Rr Rr 2. Using the same information as for question #1, cross a heterozygous, red-eyed female with a red-eyed male. a. What are the genotypes of each parent? b. What fraction of the children will have red eyes? C. What fraction of the children will have white eyes? d. What fraction of the female children will carry the white eyed trait?
Transcribed Image Text:VIII. ENRICHMENT ACTIVITY Directions: Answer the following Sex-linked Traits Practice Problems. 1. In fruit flies, the gene for white eyes is sex-linked recessive. (R) is red and (r) is white. Cross a white eyed female with a nommal, red-eyed male. a. What percent of the males will have red eyes? white eyes? b. What percent of the females will have red eyes? white eyes? C. What total percent of the offspring will be white-eyed? d. What percent of the offspring will be carriers of the white eye trait? | RR RR PARENT Rr Rr rr Rr Rr 2. Using the same information as for question #1, cross a heterozygous, red-eyed female with a red-eyed male. a. What are the genotypes of each parent? b. What fraction of the children will have red eyes? C. What fraction of the children will have white eyes? d. What fraction of the female children will carry the white eyed trait?
PARENT 3. In humans, hemophilia is a sex-linked recessive trait. If a female who is a carrier for hemophilia marries a male with normal blood clotting, answer the following questions. a. What fraction of the female children will have hemophilia? b. What fraction of the female children will be carriers? c. What fraction of the male children will have normal blood clotting? d. What fraction of the male children will be carriers? e. What fraction of the male children will have hemophilia? PARENT 4. Two normal visioned parents have a color-blind son. Give the genotype of both parents and the son. PARENT 5. In cats, the allele (B) produces black color but (b) produces a yellow color. These alleles are incompletely dominant to each other. A heterozygote produces a tortoise shell color. The alleles (B) and (b) are sex-linked as well. Cross a tortoise shell female with a yellow male. a. What percent of their offspring will be yellow? b. What percent of their offspring will be black? c. What percent of their offspring will be tortoise shell? d. Why is it impossible to have a tortoise shell male offspring? PARENT
Transcribed Image Text:PARENT 3. In humans, hemophilia is a sex-linked recessive trait. If a female who is a carrier for hemophilia marries a male with normal blood clotting, answer the following questions. a. What fraction of the female children will have hemophilia? b. What fraction of the female children will be carriers? c. What fraction of the male children will have normal blood clotting? d. What fraction of the male children will be carriers? e. What fraction of the male children will have hemophilia? PARENT 4. Two normal visioned parents have a color-blind son. Give the genotype of both parents and the son. PARENT 5. In cats, the allele (B) produces black color but (b) produces a yellow color. These alleles are incompletely dominant to each other. A heterozygote produces a tortoise shell color. The alleles (B) and (b) are sex-linked as well. Cross a tortoise shell female with a yellow male. a. What percent of their offspring will be yellow? b. What percent of their offspring will be black? c. What percent of their offspring will be tortoise shell? d. Why is it impossible to have a tortoise shell male offspring? PARENT
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