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Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 13, Problem 3SQ
Summary Introduction
Concept Introduction: Independent assortment is one of the laws proposed by Mendel. Mendel proposed the law of independent assortment based on the results of dihybrid cross that “alleles at one locus tend to assort into gametes independently of alleles at other loci”.
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Students have asked these similar questions
A mapping experiment in strawberries shows that the genes for color and plant height are separated by 16cM. In a cross between a heterozygous plant (CcHh) and a homozygous recessive plant, what percent of offspring would inherit a chromosome carrying cH from the heterozygous parent....
1. if the heterozygous parent’s alleles are in repulsion? _________________
2. if the heterozygous parent’s alleles are in coupling? _________________
Mendel's observation of the random distribution of two different traits from parents to offspring (giving the 9:3:3:1 ratio of phentypes) was due to
A. The random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.
B. The random nature of the fertilization of ova by sperm.
C. The random distribution of the sister chromatids to the two daughter cells during anaphase II.
D. The relatively small degree of homology shared by the X and Y chromosomes.
Assume for a moment that you are working in a genetics lab with the fruit fly Drosophila melanogaster, a model organism for genetic research. You want to determine whether a newly found Drosophila characteristic is dominant or recessive.a. Explain how you would construct such a cross, as well as the expected outcomes that would indicate dominance.b. Why would working with Drosophila be easier than working with humans?
Chapter 13 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 13 - Prob. 1DAACh. 13 - Prob. 2DAACh. 13 - Prob. 3DAACh. 13 - Prob. 1SQCh. 13 - An organisms observable traits constitute its...Ch. 13 - Prob. 3SQCh. 13 - Prob. 4SQCh. 13 - The offspring of the cross AA aa are ________. a....Ch. 13 - Refer to question 5. Assuming complete dominance,...Ch. 13 - A testcross is a way to determine ________. a....
Ch. 13 - Assuming complete dominance, a cross between...Ch. 13 - The probability of a crossover occurring between...Ch. 13 - True or false? All traits are inherited in a...Ch. 13 - One gene that affects three traits is an example...Ch. 13 - The phenotype of individuals heterozygous for...Ch. 13 - _______ in a trait is indicated by a bell curve....Ch. 13 - Match the terms with the best description. ______...Ch. 13 - Mendel crossed a true-breeding pea plant with...Ch. 13 - Assuming that independent assortment occurs during...Ch. 13 - Refer to problem 2. Determine the predicted...Ch. 13 - For each genotype listed, what allele combinations...Ch. 13 - Prob. 5GPCh. 13 - Suppose you identify a new gene in mice. One of...Ch. 13 - Mutations in the TYR gene may render its enzyme...Ch. 13 - In sweet pea plants, an allele for purple flowers....Ch. 13 - Red-flowering snapdragons are homozygous for...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. A female homozygous for an X-linked allele can produce how many types of gametes with respect to that allele? c. A female heterozygous for an X-linked allele can produce how many types of gametes with respect to that allele?arrow_forwardOne of the autosomal loci controlling eye color in fruit flies has two alleles: one for brown eyes and the other for red eyes. Fruit flies from a true-breeding line with brown eyes were crossed with flies from a true-breeding line with red eyes. The F1 flies had red eyes. What conclusion can be drawn from this experiment? (a) these alleles underwent independent assortment (b) these alleles underwent segregation (c) these genes are X-linked (d) the allele for red eyes is dominant to the allele for brown eyes (e) all the preceding are truearrow_forwardA heterozygous individual has a _______ for a trait being studied. a. pair of identical alleles b. pair of nonidentical alleles c. haploid condition, in genetic termsarrow_forward
- In a cross between a homozygous red-eyed female fruit fly and a white-eyed male fruit fly, what is the expected outcome? a. all white-eyed male offspring b. all white-eyed female offspring c. all red-eyed offspring d. half white-eyed make offspringarrow_forwardD In fava bean plant the seed color can be coded by two alleles, green (G) which is dominant and purple (g) which is recessive. A gardening hobbyist performed a cross between 2 true-breeding lines P1 and P2 that respectively have green and purple seeds. Answer the following questions in regard to the hobbyist experiment. 1) What are the genotypes of the parental lines A and B? what are the genotypes of the gametes of each parent? 2)What is the phenotype and genotype of the F1 generation of the cross? 3) What are the proportions of the genotypes of the F2 generation? 4)What are the proportions of the phenotypes of the F2 generation?arrow_forwardPercentage of crossing over is more when ______ A. Genes are located in a different cell B. Genes are not linked C. linked genes are located close to each other D. linked genes are located far apart from each otherarrow_forward
- a. What is the type of inheritance? b. What is known of the genotype of the male in the above cross? c. What is known of the genotype of the female in the above cross? d. Provide map distances if possible.arrow_forwardWebbed fingers is inherited as an X-linked disease An unaffected male marries an affected female. a. Draw a Punnett square of the possible offspring. b. List the phenotypes of the possible children c. Draw a pedigree that displays the inheritance in you Punnett squarearrow_forwardCrossing over means the same as: a. incomplete dominance b. the process by which pieces of homologous chromosomes are exchanged c. heterozygosity d. the peculiar lineup of homologous chromosomes e. independent assortmentarrow_forward
- Figure 5.1 presented abbreviated pedigrees looking at the inheritance of X-linked human conditions. El Figure 5.1a initiated with a male who was color blind and had hemophilia A. The grandsons and great-grandsons of this male were either color blind and had hemophilia A, or they had neither condition. a. Which if any individuals in the G Fig. 5.1a pedigree is a double heterozygote? b. Are any of the grandsons or great-grandsons shown in the pedigree the product of recombinant type gametes? c. Do the genes responsible for color blindness and hemophilia A segregate independently? d. If you examined many pedigrees, each starting with a man who was simultaneously color blind and had hemophilia A, do you think any grandsons or great-grandsons would ever have one condition but not the other? L Figure 5.1b initiated with a male who was color blind and had hemophilia B. The grandsons of this male were either only color blind, only had hemophilia B, had both conditions, or they had neither…arrow_forwardFor the pedigree shown here, the disorder is caused by a recessive (g) allele on the X chromosome. Label each of the following individuals with the correct genotype (XGY, XgY, XGXG, XGXg, XgXg). a. Generation I, number 2 b. Generation II, number 2 c. Generation II, number 5 d. Generation III, number 2 e. Generation III, number 6arrow_forwardWhat is/are the phenotypes of the recombinant offspring of the F2generation?a. red eyes, long wingsb. white eyes, miniature wingsc. red eyes, long wings and white eyes, miniature wingsd. red eyes, miniature wings and white eyes, long wings [Answer the multiple-choice questions based on the following experiment:P generation: True-breeding flies with red eyes and long wings werecrossed to flies with white eyes and miniature wings. All F1 offspringhad red eyes and long wings.The F1 female flies were then crossed to males with white eyes and miniaturewings. The following results were obtained for the F2 generation:129 red eyes, long wings133 white eyes, miniature wings71 red eyes, miniature wings67 white eyes, long wings]arrow_forward
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