1. The drawing below represents the chromosomes in a diploid cell from a fly that is heterozygous for the gene for antenna size (Aa) and homozygous recessive for the gene for body color (bb). Draw the possible gametes that could be produced by this fly. Your drawing should include the chromosomes with alleles labeled. Aabb A AD Ab (ab Ab meiosis a 2. Assume that for the antenna size gene, large size (A) is dominant to small (a). For the body color gene, black (B) is dominant to grey (b). The fly from question #1 (Aabb) mates witha fly that is heterozygous for both the antenna size gene and the body color gene (AaBb). Predict the ratio of the phenotypes that would be found in their offspring. Show your work Ratios: Large antenna, black body Ab ab ab Ab AaBb Large antenna, grey body Aa Bb AABb AB AMBb Small antenna, black body Small antenna, grey body habb Aa bb AAbb Ab AAbb da Bb AaBb aB AaB Aabb aabb Aabb aabh ab 3. Red/green colorblindness is a sex-linked recessive trait in humans. A woman that is heterozygous for colorblindness is married to a man who is not colorblind. Predict the ratio of the phenotypes that would be found in their offspring. Show your work. Ratios: Normal vision female Colorblind female Normal vision male Colorblind male
1. The drawing below represents the chromosomes in a diploid cell from a fly that is heterozygous for the gene for antenna size (Aa) and homozygous recessive for the gene for body color (bb). Draw the possible gametes that could be produced by this fly. Your drawing should include the chromosomes with alleles labeled. Aabb A AD Ab (ab Ab meiosis a 2. Assume that for the antenna size gene, large size (A) is dominant to small (a). For the body color gene, black (B) is dominant to grey (b). The fly from question #1 (Aabb) mates witha fly that is heterozygous for both the antenna size gene and the body color gene (AaBb). Predict the ratio of the phenotypes that would be found in their offspring. Show your work Ratios: Large antenna, black body Ab ab ab Ab AaBb Large antenna, grey body Aa Bb AABb AB AMBb Small antenna, black body Small antenna, grey body habb Aa bb AAbb Ab AAbb da Bb AaBb aB AaB Aabb aabb Aabb aabh ab 3. Red/green colorblindness is a sex-linked recessive trait in humans. A woman that is heterozygous for colorblindness is married to a man who is not colorblind. Predict the ratio of the phenotypes that would be found in their offspring. Show your work. Ratios: Normal vision female Colorblind female Normal vision male Colorblind male
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter13: Genes, Chromosomes, And Human Genetics
Section: Chapter Questions
Problem 8TYK: Another gene in Drosophila determines wing length. The dominant wild-type allele of this gene...
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Transcribed Image Text:1. The drawing below represents the chromosomes in a diploid cell from a fly that is heterozygous for the gene for
antenna size (Aa) and homozygous recessive for the gene for body color (bb). Draw the possible gametes that could be
produced by this fly. Your drawing should include the chromosomes with alleles labeled.
Aabb
A
AD
Ab (ab
Ab
meiosis
a
2. Assume that for the antenna size gene, large size (A) is dominant to small (a). For the body color gene, black
(B) is dominant to grey (b). The fly from question #1 (Aabb) mates witha fly that is heterozygous for both the
antenna size gene and the body color gene (AaBb). Predict the ratio of the phenotypes that would be found in
their offspring. Show your work
Ratios:
Large antenna, black body
Ab ab
ab
Ab
AaBb
Large antenna, grey body
Aa Bb AABb
AB AMBb
Small antenna, black body
Small antenna, grey body
habb
Aa bb AAbb
Ab AAbb
da Bb AaBb
aB AaB
Aabb aabb Aabb aabh
ab
3. Red/green colorblindness is a sex-linked recessive trait in humans. A woman that is heterozygous for
colorblindness is married to a man who is not colorblind. Predict the ratio of the phenotypes that would be
found in their offspring. Show your work.
Ratios:
Normal vision female
Colorblind female
Normal vision male
Colorblind male
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