Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 10, Problem 3GP
In the edible pea, tall (T) is dominant to short (t), and green pods (G) are dominant to yellow pods (g). List the types of gametes and offspring that would be produced in the following crosses:
a. TtGg × TtGg
b. TtGg × TTGG
c. TtGg × Ttgg
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Given a cross between
AabbCcDdEeFFGgHh x AaBbCcDdEEffggHH,
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d) how many phenotypes can be expected from the cross?
PLEASE SHOW THE CROSSES USING PROBABILITY RULE
In guinea pigs, rough coat (R) is dominant over smooth (r), and black coat (B) is dominant over white (b). If a pure-breeding rough, black animal is crossed with a smooth white one:
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Chapter 10 Solutions
Biology: Life on Earth
Ch. 10 - Fill-in-the-Blank The physical position of a gene...Ch. 10 - Define nondisjunction, and describe common...Ch. 10 - In certain cattle, hair color can be red...Ch. 10 - Prob. 2GPCh. 10 - In the edible pea, tall (T) is dominant to short...Ch. 10 - In tomatoes, round fruit (R) is dominant to long...Ch. 10 - In the tomatoes of Problem 4, an F1 offspring...Ch. 10 - Prob. 6GPCh. 10 - In humans, one of the genes determining color...Ch. 10 - In the couple described in Problem 7, the woman...
Ch. 10 - An organism is described as Rr, with red coloring....Ch. 10 - 2. The inheritance of multiple traits depends on...Ch. 10 - Fill-in-the-Blank Many organisms, including...Ch. 10 - 4. Genes that are present on one sex chromosome...Ch. 10 - 5. When the phenotype of heterozygotes is...Ch. 10 - 1. Define the following terms: gene, allele,...Ch. 10 - 2. Explain why genes located on the same...Ch. 10 - 3. Define polygenic inheritance. Why does...Ch. 10 - What is sex linkage? In mammals, which sex would...Ch. 10 - What is the difference between a phenotype and a...Ch. 10 - 6. In the pedigree of part (a) of Figure 11–22, do...Ch. 10 - Sometimes the term gene is used rather casually....Ch. 10 - In an alternate universe, all the genes in all...Ch. 10 - Prob. 3AC
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- In the tomato, yellow flowers (Y) is dominant to white flowers (y). A true-breeding yellow flowered strain is crossed with a true-breeding white flowered strain.A. If the F1 generation is self crossed, what will be the genotypes and phenotypes of the progeny and in what portions are they expected? B. If an F1 plant were crossed with a plant from true-breeding white flowered strain, what will be the genotypes and phenotypes of the progeny and in what portions are they expected?arrow_forwardYou perform a cross between two true-breeding strains of zucchini, One has green fruit and the other has yellow fruit. The F1 plants are all green, but when these are crossed, the F2 plants consist of 9 green: 7 yellow. A. Assuming that wild-type zucchini are green, how would you describe the phenomenon that occurred in the F1 of part (e) of the parents and progeny?.arrow_forwardIn a three-point testcross, the nonrecombinant progeny are A+ B+ C+ and a b c. The double- crossover progeny are A+ B+ c and a b C+. Which gene is in the middle and why?arrow_forward
- A heterozygous individual is crossed with a homozygous recessive individual. a. Draw a Punnett square to represent this cross. b. What is the probability that an offspring will have a homozygous genotype? c. What is the probability that an offspring will have a dominant phenotype? d. What is the probability that three offspring will be produced that all carry the recessive allele but do not express the recessive phenotype?arrow_forwardLet us suppose that two long-winged flies were crossed and that 77 long-winged and 24 short-winged specimens were counted in the offspring. a. Will the short-winged character be dominant or recessive?B. What will the genotypes of the parents be?C. What is the observed genotype ratio?arrow_forwardA cross between two red flower plants produces 2/3 progeny that are red and1/3 progeny that are yellow. What is the genotype of the red flower? Explain these unexpected ratios.arrow_forward
- In pea plants, flower color is determined by one gene with two alleles, with the allele coding for purple flowers (P) being dominant to the allele coding for white flowers (p). If two purple-flowered offspring resulting from a cross between homozygous dominant and white-flowered parents are crossed, what percentage of the progeny are expected to have the dominant phenotype?arrow_forwardIn a testcross for two genes, what types of gametes are produced with (a) complete linkage, (b) independent assortment, and (c) incomplete linkage?arrow_forwardA rabbit with black fur (B) is crossed with a rabbit with white fur (b). All of the offspring have black fur. What is the genotype of the black rabbit parent?arrow_forward
- A) In these plants, green leaf color is dominant to yellow leaf color. You are given a plant with green leaves and are asked to determine its genotype. What type of cross will you perform? B) The results of this cross are: 50% green leaf plants and 50% yellow leaf plants. What is the genotype of the green leaf plant you were given?arrow_forwardIf two gene pairs A and a and B and b are assorting independently with A dominant to a and B dominant to b, what is the probability of obtaining: a. an AB gamete from an AaBb individual? b. an AABB zygote from an AaBb x AaBb cross? c. an aaBb offspring from an AaBB x aabb cross? d. a phenotype aB from an Aabb x aaBb cross? e. an ab gamete from an aaBB individual?arrow_forwardSuppose a student performs a three-point test cross with mice involving mouse genes T, V and D. If the most abundant classes of progeny are TvD and tVd and the rarest classes are tvd and TVD which gene is in the middle and what is the genotype of each mouse involved in the cross?arrow_forward
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