Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 19, Problem 8SQ
Summary Introduction
Introduction: The allele is the variant of the gene. The allele can be dominant or recessive. The dominant allele is the one that will be expressed in the heterozygous condition where two different alleles of the same gene are present. Phenotypic ratio refers to the ratio of the number of organisms in the generation that would express several
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Chapter 19 Solutions
Human Biology (MindTap Course List)
Ch. 19 - Define the difference between (a) gene and allele,...Ch. 19 - Prob. 2RQCh. 19 - What is probability, and how is it applied in...Ch. 19 - What is independent assortment? Does independent...Ch. 19 - Alleles are ___________. a. alternate forms of a...Ch. 19 - A heterozygote has _____. a. only one of the...Ch. 19 - Prob. 3SQCh. 19 - Offspring of a cross AA aa are ______. a. all AA...Ch. 19 - Prob. 5SQCh. 19 - Prob. 6SQ
Ch. 19 - Which statement best fits the principle of...Ch. 19 - Prob. 8SQCh. 19 - Prob. 9SQCh. 19 - Prob. 10SQCh. 19 - One gene has alleles A and a. Another has alleles...Ch. 19 - Still referring to Problem 1, what will be the...Ch. 19 - Go back to Problem 1, and assume you now study a...Ch. 19 - The young woman shown at right has albinismvery...Ch. 19 - When you decide to breed your Labrador retriever...Ch. 19 - The ABO blood system has been used to settle cases...Ch. 19 - Prob. 7CTCh. 19 - A man is homozygous dominant for ten different...Ch. 19 - Prob. 9CTCh. 19 - Bill and Marie each have flat feet, long...Ch. 19 - You decide to breed a pair of guinea pigs, one...
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- Cystic fibrosis is a recessive Mendelian disorder. An individual must have two copies of the recessive allele (c) to have the disease. If two heterozygous carriers (Cc) mate, what proportion of their offspring will have cystic fibrosis? a. 0% b. 25% c. 50% d. 75% e. 100%arrow_forwardA long-haired cat is crossed to a short-haired cat, both from purebreeding lines. All of the resulting offspring have short hair What types of offspring would result if you crossed one of the offspring to the long-haired parent? Group of answer choices A. all short B. ¼ short ¾ long C. half short and half long D. all long E. ¾ short, ¼ longarrow_forwardIn mating between two individuals that are heterozygous for a recessive allele, what genotypic ratio would you expect in the offspring? homozygous dominant: heterozygous: homozygous recessive? A. 1:2:1 B. 3:1:1 C. 1:2:0 D. 0:2:1 E. 1:4:2arrow_forward
- a cross between AaBb and aaBb should give what phenotypic ratio? A. 7:1 B. 15:1 C. 3:1 D. 1:1 E. B and Darrow_forwardRed-green color blindness is caused by a recessive allele on the X chromosome. A color blind woman and her normal vision husband have a color blind son. If they have a daughter what is the probability that the daughter will be color blind? Group of answer choices A. 50% B. 25% C. 100% D. 75% E. 0arrow_forwardA cross occurs between a black homozygous mouse and a white homozygous mouse. They produce gray offspring. Respond to the question based upon this scenario. What are the percentage probabilities for the genotype and phenotype of the offspring? a. 100% black; 100% Bb b. 100% gray; 100% bb c. 100% white; 75% Bb, 25% bb d. 100% gray; 100% Bbarrow_forward
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- Labrador retrievers’ fur color is controlled by two alleles, E and B. Any dog with the ee__ genotype develops into a yellow lab, while B_E_ dogs become black labs and bbE_ dogs become chocolate labs. This is an example of _____. a. epistasis b. codominance c. incomplete dominance d. linkagearrow_forwardWhat is the offspring phenotypic ratio for a cross of a homozygous recessive individual and a heterozygous individual? all heterozygous a. 2:2 or 1:1 dominant : recessive Ob. all recessive O c. 1 dominant : 2 heterozygous : 1 recessive O d. all dominant e. 3 dominant : 1 recessive O f. 2:2 or 1:1 heterozygous : recessive 2:2 or 1:1 dominant : heterozygous Oh.arrow_forwardRed-green color blindness is controlled by a recessive allele on the X chromosome. A colorblind father and a normal vision mother have a daughter with red green color blindness. If they have a son what is the probability that he will be color blind? Group of answer choices a. 0.75 b. 0.5 c. 0 d. 1 e. 0.25arrow_forward
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