Introduction to Genetic Analysis
11th Edition
ISBN: 9781464109485
Author: Anthony J.F. Griffiths, Susan R. Wessler, Sean B. Carroll, John Doebley
Publisher: W. H. Freeman
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Chapter 2, Problem 58P
Summary Introduction
To determine: The probability of all of the mice being black.
Introduction: Albinism is extensive in the animal kingdom and is generated through the deficiency of melanin in the hair, eyes, or skin. Analysis of albinism has chiefly concentrated on humans and mice, and there is limited conducted research on albino echinoderms.
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Genes A, B, and C all assort independently. For the cross AaBbCc X AaBbcc, what fraction of the progeny would be expected to have the ABc phenotype?
Gene “A” and gene “B” are not linked. Each has two alleles. The A allele is dominant over the a allele and the B allele is dominant over the b allele. Answer the following questions about a dihybrid (two-trait) cross.
A) List all of the possible gametes (eggs) that could be produced by an individual with the genotype: aabb
B) List all of the possible gametes (sperm) that could be produced by an individual with the genotype: AaBB
C) Fill out a Punnett square for the dihybrid cross cross between the two individuals listed above (aabb x AaBB). What percent of the offspring from this cross would have the dominant phenotype for both traits?
A, B,D are three independently assorting
genes with their recessive alleles a, b, d
respectively. A cross was made between
individuals of Aa bb DD genotype with aa bb
dd. Explain the type of genotypes of the
offspring
Chapter 2 Solutions
Introduction to Genetic Analysis
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11P
Ch. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 44.1PCh. 2 - Prob. 44.2PCh. 2 - Prob. 44.3PCh. 2 - Prob. 44.4PCh. 2 - Prob. 44.5PCh. 2 - Prob. 44.6PCh. 2 - Prob. 44.7PCh. 2 - Prob. 44.8PCh. 2 - Prob. 44.9PCh. 2 - Prob. 44.10PCh. 2 - Prob. 44.11PCh. 2 - Prob. 44.12PCh. 2 - Prob. 44.13PCh. 2 - Prob. 44.14PCh. 2 - Prob. 44.15PCh. 2 - Prob. 45PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 51PCh. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 56PCh. 2 - Prob. 57PCh. 2 - Prob. 58PCh. 2 - Prob. 59PCh. 2 - Prob. 60PCh. 2 - Prob. 61PCh. 2 - Prob. 62PCh. 2 - Prob. 63PCh. 2 - Prob. 64PCh. 2 - Prob. 65PCh. 2 - Prob. 66PCh. 2 - Prob. 67PCh. 2 - Prob. 68PCh. 2 - Prob. 69PCh. 2 - Prob. 70PCh. 2 - Prob. 71PCh. 2 - Prob. 72PCh. 2 - Prob. 73PCh. 2 - Prob. 74PCh. 2 - Prob. 75PCh. 2 - Prob. 76PCh. 2 - Prob. 77PCh. 2 - Prob. 78PCh. 2 - Prob. 79P
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- In sweet pea, gene C or P alone produces white flowers, the purple color being due to the presence of both of these factors. A white-flowered plant crossed with a purple produces progeny of which 3/8 are purple and 5/8 are white-flowered plants. Give the genotypes of the parents and offspring.arrow_forwardThe cross between a female white giraffe and a pigmented male resulted in white offspring. What is the genotype of the father? Draw the test cross.arrow_forwardIn the following dihybrid cross: B/b; E/e x B/b; e/e What are the phenotypes of the offspring? 9/16 Black 3/16 brown 4/16 golden 9/16 Brown 3/16 Black 4/16 golden 9/16 Black 3/16 golden 4/16 brown 3/8 Black 1/8 brown 4/8 golden 3/8 golden 4/8 Black 1/8 brownarrow_forward
- Cross the following two genotypes: Aa Bb Cc Dd Ee x Aa bb Cc dd Ee. What is the proportion of AA Bb Cc DD Ee among the progeny of this cross?arrow_forwardIn sweet peas, gene C or P alone produces white flowers, the purple colour being due to the presence of both these factors. What will be the flower colour of the offsprings of the following crosses, in which genotypes of parents are given;a) A white flowered plant crossed with a purple produces offspring, of which three-eighth are purple and five-eighth white.arrow_forwardA cross between two red flower plants produces 2/3 progeny that are red and1/3 progeny that are yellow. What is the genotype of the red flower? Explain these unexpected ratios.arrow_forward
- an individual that is heterozygous for type A blood mates with an individual that has type o blood. what are the predicted genotypic and phenotypic ratios for this cross?arrow_forwardGene A converts compound A (white) to compound B (blue). Gene B converts compound B to compound C (purple). These compounds determine the color of the individual. In a self cross of AaBb individuals, what proportion of white to purple offspring should be seen? 3 white : 1 purple 3 white : 4 purple 4 white : 3 purple 1 white : 3 purple 4 white : 9 purplearrow_forwardIn mice, the A allele is dominant for yellow coat color, but AA is lethal. The little a allele gives agouti coat color. Also, CC or Cc is normal, but cc is albino, which is of course epistatic to the A gene, since albino mice are neither yellow nor agouti colored. The cross is AaCc to Aacc. What fractions of mice will you get? (Remember there are 3 phenotypes possible, yellow, agouti, or albino. And you never see dead mice, so you are counting only live progeny). SHOW WORK for credit.arrow_forward
- A cross was made between a black male dog and two different white females. The first female gave birth to eight white pups, and the second female gave birth to two white and three black pups. What are the likely genotypes of the male parent and the two female parents?arrow_forwardWhat will be the PR and GR of the following crosses? Give also their phenotypes. (Designate your own phenotype for each character) AaBb x aabb AAbb x AaBB AaBb x aaBB AABb x aabbarrow_forwardShort hair (S) in rabbits is dominant over long hair (s). The following crosses are carried out, producing the progeny shown. Give all possible genotypes of the parents in each cross.arrow_forward
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