Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
15th Edition
ISBN: 9781337408493
Author: STARR, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Publisher: Cengage Learning
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Textbook Question
Chapter 13, Problem 9SQ
The probability of a crossover occurring between two genes on the same chromosome ________.
- a. is unrelated to the distance between them
- b. decreases with increasing distance between them
- c. Increases with the distance between them
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The probability of a crossover occurring between two genes on the same chromosome_____ . a. is unrelated to the distance between them b. decreases with increasing distance between them c. increases with the distance between them
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Chapter 13 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Starr/taggart/evers/starr's Biology: The Unity And Diversity Of Life
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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- Fruit flies with one allele for curly wings (Cy) andone allele for normal wings (Cy+) have curly wings.When two curly-winged flies were crossed, 203curly-winged and 98 normal-winged flies wereobtained. In fact, all crosses between curly-wingedflies produce nearly the same curly : normal ratioamong the progeny.a. What is the approximate phenotypic ratio in theseoffspring?b. Suggest an explanation for these data.c. If a curly-winged fly was mated to a normalwinged fly, how many flies of each type would youexpect among 180 total offspring?arrow_forwardA cross between two pea plants with genotypes PpLI and PpLI results in an F1 generation that is 25% PPLL, 50% PpLI, and 25% ppll. Which reason most likely explains why other possible genotypes are not present? Choose 1 answer. A.The genes underwent independent assortment B.The loci of the genes are close together. C.The loci of the genes are on different chromosomes. D.Crossing over occurred between chromosomes.arrow_forwardRed-green color blindness is a recessive trait in humans. The locus is on the X chromosome. If a color blind woman marries a normal vision man, what kind of children could they have? Group of answer choices A. color blind daughters, normal vision sons B. color blind sons, normal vision daughters C. all color blind D. all normal visionarrow_forward
- Using the pedigree chart, explain: a) The number of generations seen. b) If all blue-coloured shapes are affected with disease X- how many males are affected? how many females are affected? c) Does this disease have a dominant or recessive inheritance pattern? Justify your answer.arrow_forwardPolydactyly is a condition in which a person has extra fingersand/or toes. It is caused by a dominant allele. If a person carriesthis allele but does not have any extra fingers or toes, this is anexample ofa. haploinsufficiency.b. a dominant negative mutation.c. incomplete penetrance.d. a gain-of-function mutation.arrow_forwardAlleles for Tay-Sachs disease are inherited in an autosomal recessive pattern. Why would two parents with a normal phenotype have a child with Tay-Sachs? a. Both parents are homozygous for a Tay-Sachs allele. b. Both parents are heterozygous for a Tay-Sachs allele. c. New mutations gave rise to Tay-Sachs in the child. d. b or carrow_forward
- In diseases with a recessive inheritance linked to sex (X chromosome), from the mother: A. 50% of women and 50% of men are affected. B. The woman is always affected by the disease. C. The man is always affected by the disease. D. 50% of women are affected.arrow_forwardTwo pea plants that are true-breeding for recessive white flowers are mated and their offspring analyzed. Which of the following statements about this situation is true? Group of answer choices A)The offspring represent the P generation. B)The gametes produced by the offspring will carry only one allele for this gene. C)Both parents are referred to as heterozygotes. D)Half of the offspring will be true-breeding for white flowers.arrow_forwardThe genotype of an individual with the dominant phenotype can bedetermined best by reproduction witha. a homozygous recessive c. the dominant phenotype.individual. d. None of these are correct.b. a heterozygote.arrow_forward
- is the term for a a person who has two different alleles at the same gene (locus) and both of these alleles are expressed. Group of choices (a)Recessiveness (b)Homozygosity (c)X-linkage (d)Codominantarrow_forwardA testcross with a homozygous dominant genotype should lead to progeny that: a. All have a homozygous dominant genotype b. All exhibit a recessive phenotype c. All exhibit a dominant phenotype d. All die, since exclusively homozygous recessive progeny are made e. Have a 3:1 dominant to recessive phenotypearrow_forwardA geneticist determines that the order of four genes on a specific chromosome is CABD because the recombination frequencies were 35% for C-D, 24% for A-D, 23% for B-D, and 10% for A-B. What has the geneticist constructed? A. a physical map B. a karyotype C. a cytogenic map D. a linkage maparrow_forward
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