Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 11.3, Problem 3CYL
Summary Introduction
To explain:
Proportion of offspring with each genotype and
Introduction:
Offspring are produced by the process of mating between the parents. A test cross involves a cross between a progeny and homozygous recessive parent whereas a back cross involves the crossing of a heterozygous progeny with one of the parents.
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Give some examples of phenotypic variation ?
In fruit flies, the allele for long wings (L) is dominant to the allele for short wings (l). If a male that is heterozygous for wing length mates with a female that has short wings what are the possible genotypes and phenotypes of their offspring? Complete the Punnett square below. What is the expected phenotypic ratio among the offspring?
Consider and X-linked locus with two alleles A1 and A2. Allele A1 has an initial allele frequency of 1.0 in females and 0 in males. Use a spreadsheet (Excel) and its graphing functions to calculate the allele frequencies in males and females for 25 generations. Also plot the expected genotype frequencies in females for 25 generations.* show graph and plot *
Chapter 11 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 11.1 - describe the relationships among chromosomes, DNA,...Ch. 11.1 - Prob. 2CYLCh. 11.2 - distinguish between self-fertilization and...Ch. 11.2 - Prob. 2CYLCh. 11.3 - Sudden Death on the court Many traits, in humans...Ch. 11.3 - describe the pattern of inheritance of a trait...Ch. 11.3 - Prob. 1TCCh. 11.3 - Prob. 2CYLCh. 11.3 - Prob. 3CYLCh. 11.4 - Prob. 1CYL
Ch. 11.4 - Prob. 1TCCh. 11.4 - Prob. 2CYLCh. 11.4 - Prob. 2TCCh. 11.4 - Prob. 3CYLCh. 11.5 - Prob. 1CSCCh. 11.5 - Prob. 1CYLCh. 11.5 - Prob. 1HYEWCh. 11.5 - Prob. 1TCCh. 11.5 - explain how polygenic inheritance and...Ch. 11.6 - describe how the patterns of inheritance differ...Ch. 11.7 - Prob. 1CYLCh. 11.7 - explain why most sex-linked traits are controlled...Ch. 11.7 - describe the pattern of inheritance of sex-linked...Ch. 11.8 - Prob. 1CSRCh. 11.8 - use pedigrees to determine the pattern of...Ch. 11.8 - Prob. 1ETCh. 11.8 - Prob. 1TCCh. 11.8 - Prob. 2CYLCh. 11.8 - Prob. 2ETCh. 11 - Prob. 1ACCh. 11 - An organism is described as Rr, with red coloring....Ch. 11 - In certain cattle, hair color can be red...Ch. 11 - Prob. 1MCCh. 11 - Define the following terms: gene, allele,...Ch. 11 - Prob. 2ACCh. 11 - Prob. 2FIBCh. 11 - Prob. 2GPCh. 11 - Prob. 2MCCh. 11 - Prob. 2RQCh. 11 - Prob. 3FIBCh. 11 - Prob. 3GPCh. 11 - Prob. 3MCCh. 11 - Prob. 3RQCh. 11 - Genes that are present on one sex chromosome but...Ch. 11 - Prob. 4GPCh. 11 - Prob. 4MCCh. 11 - Prob. 4RQCh. 11 - Prob. 5FIBCh. 11 - Prob. 5GPCh. 11 - Prob. 5MCCh. 11 - Prob. 5RQCh. 11 - Prob. 6GPCh. 11 - Prob. 6RQCh. 11 - In the couple described in Problem 6, the woman...
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- list and briefly describe the three process that lead to variation in offspring with the same parents.arrow_forwardConsider a mating between two individuals represented by genotypes NnTT X NNTt. Uppercase letters represent dominant alleles and lowercase letters represent recessive alleles. Assume the N and T loci segregate independently (i.e., are not linked). What is the frequency of double heterozygotes (NnTt) in the offspring of these matings? Group of answer choices 1/2 1/16 1/8 1/4arrow_forwardWhat is the phenotypic ratio of the offspring?arrow_forward
- If the frequency of the homozygous dominant genotype is 0.49, what is the frequency of the dominant allele?arrow_forwardIn fruit flies, gray body (G) is dominant to black body (g). If a male with a black body mates with a female that is homozygous dominant for her gray body what are the possible genotypes and phenotypes of their offspring? Complete the Punnett square below. What is the expected phenotypic ratio among the offspring?arrow_forwardA homozygous red pigmented female beetle (bb) is bred with a black pigmented male of unknown genotype. It’s unknown if the male homozygous dominant (BB) or heterozygous (Bb) for the pigment trait. The color of their offspring will help identify the genotype of the male. What do you call this method used to determine the genotype of the male beetle? Explain your answer by using Punnett square to show possible offspring genotypes.arrow_forward
- what is the expected ratio?arrow_forwardThe genetic identity of the female parent is RrGg and the genetic identity of the male parent is Rrgg. They produce 320 offspring together from a single mating: 57 red-eyed females with grey bodies, 61 red-eyed females with yellow bodies, 22 brown-eyed females with grey bodies, 20 brown-eyed females with yellow bodies.59 red-eyed males with grey bodies, 63 red-eyed males with yellow bodies, 20 brown-eyedmales with grey bodies, 18 brown-eyed males with yellow bodies. Show the simultaneous transmission of the two genes involved to give rise to the progeny given with the use of genetic diagrams and summaries as required. (Hint: you are only requiredto show the simultaneous transmission from the P to F1 generations)arrow_forwardIn a species of fish, the allele for long fins (F) is dominant over the allele for short fins (f). What will be the genotype and phenotype ratios for offspring do we get if we cross a long-finned homozygous male fish with heterozygous long-finned female fish? Questions: a. What are the possible genotypes of the egg the woman can produce? b. What are the possible genotypes of the sperm the man can produce? c. What is the genotype ratio for the offspring? d. What is the phenotype ratio for the offspring?arrow_forward
- In grasshoppers, the body color of brown (B) is dominant over green (b). Also, having strong legs (L) isdominant over weak legs (l). A heterozygous brown, homozygous strong-legged male mates with a heterozygous brown, homozygous weak-legged female. Get the phenotypic and genotypic ratio of the offspring using branching method.arrow_forwardIf the frequency of the dominant allele is 0.6, what is the frequency of the homozygous dominant genotype?arrow_forwardIn a species of dog, plaid color is represented by P and purple by p, short -tailed is T and long-tailed is t. What are the genotypes of a male who is purple with a long tail, and a female who is homozygous dominant for both traits? Which answer below is true? PpTT & PPTT pptt & PPTT short-tailed purple & long tailed plaid male: purple w/ long tail & female: plaid w/ short tailarrow_forward
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