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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Textbook Question
Chapter 13, Problem 6SQ
Refer to question 5. Assuming complete dominance, the F2 generation will show a
- a. 3:1
- b. 9:1
- c. 1:2:1
- d. 9:3:3:1
Question No. 5
5. The offspring of the cross AA × aa are ________.
- a. all AA
- b. all aa
- c. all Aa
- d. half are AA and half are aa
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1.What are the phenotypes of the offspring that results from a cross between snapdragon plants that produce red (RR) and pink (Rr) flowers? (Incomplete dominance) *
a. 75% red, 25% pink
b. 50% red, 50% pink
c. 50% red, 25% pink, 25% white
d. 75% pink, 25% red
2. In Dalmatian dogs, the spotted condition (S) is dominant over non-spotted (s). A litter of 8 pups were found—four spotted and four non-spotted. Based on the appearance of the pups, what are the genotypes of the parents? *
a. Ss and Ss
b. SS and ss
c. Ss and ss
d. ss and ss
3.The allele for brown eye (B) is dominant to that of blue eye (b). A brown-eyed man with a blue-eyed mother marries a blue-eyed woman. What is the probability that the first child is blue-eyed? *
a. 25%
b. 75%
c. 50%
d. 100%
4.The gene for green seed coat (G) is dominant to the gene for yellow seed coat (g). A plant with a yellow seed coat is crossed with a plant with a green seed coat. Eight of the offspring had yellow…
The offspring of the cross AA × aa are______ . a. all AA c. all Aa b. all aa d. half are AA and half are aa
Assuming complete dominance, a cross between dihybrid F1 pea plants produces F2 phenotype ratios of____ . a. 1:2:1 b. 3:1 c. 1:1:1:1 d. 9:3:3:1
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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- A woman with blood type AB marries a man with blood type B. They have a child of blood type A. What is the probability that their next child will have blood type o? Group of answer choices A. 50% B. 75% C. 25% D. 0arrow_forwardAnswer the following questions. Letter's ONLY 1. A homozygous dominant parent (FF) and a heterozygous parent (Ff) are crossed. What is the genotypic probability of the offspring? * a. 100% Ff b. 50% Ff c. 50% FF and 50% Ff d. 50% Ff and 50% ff e. 50% dominant and 50% recessive f. 100% dominant 2. After performing an experiment on monohybrid cross about the shape of the pea seeds, data were obtained from the result. There are 87 wrinkled pea seeds and 313 round seeds. Of course, round seed is dominant over wrinkled seed. What is the expected value or ratio for the wrinkled seed? * a. 21.75 b. 65.25 c. 100 d. 300 e. 400 f. None of the choicesarrow_forwardCystic 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_forward
- The Camelia flower exhibits codominance with flowers being red, white, or white and red spotted. Determine the probability that a red flower crossed with a white and red flower will have a white offspring. O a. 0% O b. 50% O c. 25% O d. 75% e. 100%arrow_forwardA woman is a carrier for the color-blindness gene, found on the X chromosome. She does not have color blindness, however. What are the chances that her female child will also inherit this gene? a. no chance (0%) b. 1 in 4 chance (25%) c. 2 in 4 chance (50%) d. 100% chancearrow_forwardA man is homozygous normal and his wife is heterozygous for a genetically inherited recessive decease. What is the probability that they will have a healthy child? Group of answer choices a. 2 out of 4 b. 1 out of 4 c. 3 out of 4 d. 4 out of 4arrow_forward
- In a parental cross between a true-breeding, homozygous purple-flowered pea plant and a true breeding homozygous white-flowered plant, the F1 generation will A. all be white B. 3: 1 ratio of white to purple C. 3: 1 ratio of purple to white D. all be purplearrow_forwardF. II QUESTION 5 Both you, your sister and brother have attached earlobes but your parents have unattached earlobes. Unattached earlobes (E) are dominant over attached earlobes (e). What are the genotypes of your parents? What is the genotype ratio that results in this cross? What is the genotype of you and your siblings? A. Ee B. 1:2:1 Parents C. ee Genotypic Ratio D. 3:1 Genotype of you and siblings. E. EE F. NO match Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save roll to see more 2.364arrow_forwardQUESTION 3 If parents differ in only a single characteristic during a test cross, it is a ________ cross. a. dihybrid b. monohybrid c. trihybridarrow_forward
- Two parents without cystic fibrosis have a child with cystic fibrosis. The allele for cystic fibrosis is therefore _________ to the non-disease allele Group of answer choices A. codominant B. recessive C. dominant D. epistatic E. incompletely dominantarrow_forwardTwo roan (brown and white spots) cows are mated. What is the probability of getting an all brown cow? Select one: a. 100% b. 1/2 c. 1/4 d. 3/4arrow_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_forward
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