Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Chapter 2, Problem 24P
The self-fertilization of an pea plant produced from a parent plant homozygous for yellow and wrinkled seeds and a parent homozygous for green and round seeds resulted in a pod containing seven peas. (Yellow and round are dominant.) What is the probability that all seven peas in the pod are yellow and round?
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A white F2 plant is allowed to self-fertilize. Of the progeny, 3/4 are white-flowered, and 1/4 are purple-flowered. What is the genotype of the white F2 plant?
A farmer crossed a tall (T) pea plant carrying yellow seeds and a dwarf pea plant (t) carrying green seeds . Tall is dominant over the dwarf and yellow is dominant over the green. Fertilization of the first generation pea plants produced a total of 16 second filial generation offsprings of the pea plants. How many tall pea plants that will have green seeds can you expect to be produced? What will be the genotype of these plants (Homozygous? Heterozygous? Or Both?).
A pea plant that is (RrYy) is allowed to self-fertilize. Round seed(R) is dominant to wrinkled (r), and yellow seed (Y) is dominant togreen (y). What is the probability of producing the following groupof five seeds: two round, yellow; one round, green; one wrinkled,yellow; and one wrinkled, green?
Chapter 2 Solutions
Genetics: From Genes to Genomes
Ch. 2 - For each of the terms in the left column, choose...Ch. 2 - During the millennia in which selective breeding...Ch. 2 - Describe the characteristics of the garden pea...Ch. 2 - An albino corn snake is crossed with a...Ch. 2 - Two short-haired cats mate and produce six...Ch. 2 - Piebald spotting is a condition found in humans in...Ch. 2 - As a Drosophila research geneticist, you keep...Ch. 2 - A mutant cucumber plant has flowers that fail to...Ch. 2 - In a particular population of mice, certain...Ch. 2 - In humans, a dimple in the chin is a dominant...
Ch. 2 - Some inbred strains of the weedy plant Arabidopsis...Ch. 2 - Among Native Americans, two types of earwax...Ch. 2 - Imagine you have just purchased a black stallion...Ch. 2 - If you roll a die singular of dice, what is the...Ch. 2 - In a standard deck of playing cards, four suits...Ch. 2 - How many genetically different eggs could be...Ch. 2 - What is the probability of producing a child that...Ch. 2 - A mouse sperm of genotype a B C D E fertilizes an...Ch. 2 - Your friend is pregnant with triplets. She thinks...Ch. 2 - Galactosemia is a recessive human disease that is...Ch. 2 - Albinism is a condition in which pigmentation is...Ch. 2 - A cross between two pea plants, both of which grew...Ch. 2 - A third-grader decided to breed guinea pigs for...Ch. 2 - The self-fertilization of an pea plant produced...Ch. 2 - The achoo syndrome sneezing in response to bright...Ch. 2 - A pea plant from a pure-breeding strain that is...Ch. 2 - The following table shows the results of different...Ch. 2 - A pea plant heterozygous for plant height, pod...Ch. 2 - In the fruit fly Drosophila melanogaster, the...Ch. 2 - Based on the information you discovered in the...Ch. 2 - Considering the yellow and green pea color...Ch. 2 - What would have been the outcome the genotypic and...Ch. 2 - Recall that Mendel obtained pure-breeding with...Ch. 2 - The gene that likely controlled flower color...Ch. 2 - For each of the following human pedigrees,...Ch. 2 - Consider the pedigree that follows for cutis laxa,...Ch. 2 - A young couple went to see a genetic counselor...Ch. 2 - Huntington disease is a rare fatal, degenerative...Ch. 2 - Is the disease shown in the following pedigree...Ch. 2 - Figure 2.22 shows the inheritance of Huntington...Ch. 2 - Consider the cystic fibrosis pedigree in Figure...Ch. 2 - Prob. 42PCh. 2 - People with nail-patella syndrome have poorly...Ch. 2 - Midphalangeal hair hair on top of the middle...Ch. 2 - A man with Huntington disease he is heterozygous...Ch. 2 - Explain why disease alleles for cystic fibrosis CF...Ch. 2 - The following pedigree shows the inheritance of...
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- A pea plant that is heterozygous with regard to seed color (yellowis dominant to green) is allowed to self-fertilize. What are the predicted outcomes of genotypes and phenotypes of the offspring?arrow_forwardIn sesame plants the one-pod condition is dominant (P) to the three-pod condition (p), and a normal leaf (L) is dominant to the wrinkled leaf (l). Pod type and leaf type are inherited independently. Determine the genotypes for the parent producing offspring: 318 one-pod, normal leaf and 98 one-pod, wrinkled leaf PPLl x PPLl, PPLl x PpLl, or PPLl x ppLl ppll x ppLl PPLL x PPLL ppll x ppllarrow_forwardA red-fruited tomato plant (which is dominant), when crossed with a yellow-fruited one, produces progeny about half of which are red-fruited and half which are yellow fruited. What are the genotypes of the parents?arrow_forward
- Heterozygous round, homozygous green seeded plants were mated with heterozygous yellow, homozygous wrinkled seeded plants. What is the probability of producing a pod of 7 peas with 3 round and green seeds, 2 round and yellow seed, and 2 wrinkled yellow seeds?arrow_forwardIn garden peas, yellow seeds (Y)(Y) are dominant to green seeds (y)(y), and inflated pods (I)(I) are dominant to constricted pods (i)(i). Suppose you have crossed YYIIYYII parents with yyiiyyii parents.What are the gametes and f1 offspring? And what is a diagram of the punnet squares.arrow_forwardIn garden pea plants, axial flower location is dominant (A) to terminal flower location (a). If two plants that are heterozygous for axial flower location are crossed, what is the probability that the first two offspring will have axial flower location?arrow_forward
- A heterozygous pea plant that is tall with yellow seeds, TtGg, is allowed to self-fertilize. What is the probability that an offspring will be either tall with yellow seeds, tall with green seeds or dwarf with yellow seeds? Use the Sum Rule to calculate the probability asked in the problem.arrow_forwardIn tomatoes, red fruit is dominant to yellow fruit, and purple stems are dominant to green stems. Thegenes encoding these traits are on different homologous chromosomes. The progeny from a matingconsisted of 305 red fruit, purple stem plants; 328 red fruit, green stem plants; 110 yellow fruit,purple stem plants; and 97 yellow fruit, green stem plants. What would be the genotypic and phenotypic outcome if each parent was self-fertilized?arrow_forwardThe probability that both alleles in the offspring are type A is the product of the probability that the allele from the pollen is A and the probability that the allele from the ovule is A (we will derive this in Section 6.5). What is the probability that the offspring of a homozygous parent is homozygous? What is the probability that the offspring of a homozygous parent is heterozygous?arrow_forward
- A pea plant is heterozygous for three genes (Tt Rr Yy), whereT = tall, t = dwarf, R = round seeds, r = wrinkled seeds, Y = yellowseeds, and y = green seeds. Tall, round, and yellow are the dominanttraits. What is the probability that an offspring from self-fertilizationof this plant will be tall with wrinkled, yellow seeds?arrow_forwardA tall pea plant with axial flowers was crossed to a dwarf plantwith terminal flowers. Tallness and axial flowers are dominanttraits. The following offspring were obtained: 27 tall, axial flowers;23 tall, terminal flowers; 28 dwarf, axial flowers; and 25 dwarf,terminal flowers. What are the genotypes of the parents?arrow_forwardThe crossing of two orange-flowering plants results in ~2/3 orange-flower progeny and ~1/3 white-flower progeny. The crossing of two orange-flowering F1 plants generates the same progeny ratios as observed for the parental cross, while the crossing of white-flowering F1 plants only produces white-flowering progeny. What is a likely explanation for these results?arrow_forward
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