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Dihybrid Crosses In dogs, an allele for yellow fur color (A) is dominant over the allele for red fur (a). An allele of another independent gene produces long tail (B) is dominant over the allele for short tail (b). For each of the crosses below, list the following: 1. Genotype of the gametes produced by each parent 2. Expected genotypic and phenotypic ratios of the offspring 3. Whether either parent is true breeding Cross 1:Aa bb X aa bb Cross 2:AA Bb X Aa BB Cross 3:aa Bb X AA Bb

Dihybrid Crosses In dogs, an allele for yellow fur color (A) is dominant over the allele for red fur (a). An allele of another independent gene produces long tail (B) is dominant over the allele for short tail (b). For each of the crosses below, list the following: 1. Genotype of the gametes produced by each parent 2. Expected genotypic and phenotypic ratios of the offspring 3. Whether either parent is true breeding Cross 1:Aa bb X aa bb Cross 2:AA Bb X Aa BB Cross 3:aa Bb X AA Bb

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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8:24 PM Wed Feb 24 78% Mejias_Worksheet 3 Worksheet 3 Monohybrid Crosses 1. You have fly stocks with normal wings (dominant) or short wings (recessive). You find a fly buzzing around your lab and want to know if this fly with normal wings is pure-breeding or heterozygous for the wing trait. a. What cross would you set to determine the genotype? Test cross Fly with normal wings crossed with a fly with short wings. b. What results would you expect from the cross? ww x ww= Ww (normal wing trait) 2. In squash, the allele for white color (W) is dominant over the allele for yellow color (w). For each of the crosses below, list the following: a) Genotype of the gametes produced by each parent b) Expected genotypic and phenotypic ratios of the offspring Cross 1: WW X ww Cross 2: Ww X ww Cross 3: Ww X Ww 3. Red fruit alleles are dominant over yellow alleles. Red homozygous tomato is crossed with yellow homozygous tomato. a. Determine the phenotypes and genotypes of the F1. b. Determine the phenotypes and genotypes of the F2. c. Suppose an F1 tomato is back crossed to a red tomato. Determine the phenotypes and genotypes of the offspring. d. Suppose an F1 tomato is back crossed to a yellow tomato. Determine the phenotypes and genotypes of the offspring. 4. In humans, brown eye alleles are dominant over blue eye alleles. If a brown-eyed man marries a blue-eyed woman and they have ten children, all brown-eyed, can you be certain that the man is homozygous? If the eleventh child has brown eyes, what will that show about the father's genotype? Father's genotype is dominant Dihybrid Crosses In dogs, an allele for yellow fur color (A) is dominant over the allele for red fur (a). An allele of another independent gene produces long tail (B) is dominant over the allele for short tail (b). For each of the crosses below, list the following: 1. Genotype of the gametes produced by each parent 2. Expected genotypic and phenotypic ratios of the offspring 3. Whether either parent is true breeding Cross 1:Aa bb X aa bb Cross 2:AA Bb X Aa BB Cross 3:aa Bb X AA Bb
Transcribed Image Text:8:24 PM Wed Feb 24 78% Mejias_Worksheet 3 Worksheet 3 Monohybrid Crosses 1. You have fly stocks with normal wings (dominant) or short wings (recessive). You find a fly buzzing around your lab and want to know if this fly with normal wings is pure-breeding or heterozygous for the wing trait. a. What cross would you set to determine the genotype? Test cross Fly with normal wings crossed with a fly with short wings. b. What results would you expect from the cross? ww x ww= Ww (normal wing trait) 2. In squash, the allele for white color (W) is dominant over the allele for yellow color (w). For each of the crosses below, list the following: a) Genotype of the gametes produced by each parent b) Expected genotypic and phenotypic ratios of the offspring Cross 1: WW X ww Cross 2: Ww X ww Cross 3: Ww X Ww 3. Red fruit alleles are dominant over yellow alleles. Red homozygous tomato is crossed with yellow homozygous tomato. a. Determine the phenotypes and genotypes of the F1. b. Determine the phenotypes and genotypes of the F2. c. Suppose an F1 tomato is back crossed to a red tomato. Determine the phenotypes and genotypes of the offspring. d. Suppose an F1 tomato is back crossed to a yellow tomato. Determine the phenotypes and genotypes of the offspring. 4. In humans, brown eye alleles are dominant over blue eye alleles. If a brown-eyed man marries a blue-eyed woman and they have ten children, all brown-eyed, can you be certain that the man is homozygous? If the eleventh child has brown eyes, what will that show about the father's genotype? Father's genotype is dominant Dihybrid Crosses In dogs, an allele for yellow fur color (A) is dominant over the allele for red fur (a). An allele of another independent gene produces long tail (B) is dominant over the allele for short tail (b). For each of the crosses below, list the following: 1. Genotype of the gametes produced by each parent 2. Expected genotypic and phenotypic ratios of the offspring 3. Whether either parent is true breeding Cross 1:Aa bb X aa bb Cross 2:AA Bb X Aa BB Cross 3:aa Bb X AA Bb
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