In squirrels, bushy tail (B) is dominant to smooth tail (b), and gray coat (G) is dominant to brown coat (g). These two loci are linked. Pure-breeding gray, smooth-tailed squirrels were mated to pure-breeding brown, bushy-tailed squirrels. The F1 were testcrossed. Testcross progeny consisted of 278 gray, smooth-tailed, 21 gray, bushy-tailed, 306 brown, bushy-tailed, and 30 brown, smooth-tailed squirrels. Calculate the map distance between these two genes in centimorgans. Round your answer properly to 2 decimal digits. Type in only the numerical value for your map distance without indicating the units.

In squirrels, bushy tail (B) is dominant to smooth tail (b), and gray coat (G) is dominant to brown coat (g). These two loci are linked. Pure-breeding gray, smooth-tailed squirrels were mated to pure-breeding brown, bushy-tailed squirrels. The F1 were testcrossed. Testcross progeny consisted of 278 gray, smooth-tailed, 21 gray, bushy-tailed, 306 brown, bushy-tailed, and 30 brown, smooth-tailed squirrels. Calculate the map distance between these two genes in centimorgans. Round your answer properly to 2 decimal digits. Type in only the numerical value for your map distance without indicating the units.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter11: The Basic Principles Of Heredity

Section: Chapter Questions

Problem 11TYU: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were...

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Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were counted, with the following results: 474 Aabb, 480 aaBb, 20 AaBb, and 26 aabb. What type of cross is it? Are these loci linked? What are the two parental classes and the two recombinant classes of offspring? What is the percentage of recombination between these two loci? How many map units apart are they?
When a white guinea pig is crossed to a yellow guinea pig, all the progeny are cream-colored. From a cross of two such F1’s, the F2 showed 32 white, 66 cream, and 30 yellow guinea pigs. How is this trait inherited? _______________ Identify the genotype of the white guinea pig. ________ Identify the genotype of the yellow guinea pig. ________ Identify the genotype of the cream-colored guinea pig. ________ Identify the genotypes and the corresponding phenotypes of the F2 progeny. Give the genotypic ratio. __________________ Give the phenotypic ratio. ___________________
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Given a cross between these two parents: BbCcDDEEFfGgHhjj x BbCcddEeFfGgHHjj where traits B, E, H, J exhibit Mendelian inheritance; C, and F exhibit incomplete dominance; D, and G exhibit co-dominance answer the following: How many phenotypes can be expected from the cross?
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Two genes control color in corn snakes as follows:O– B– snakes are brown, O– bb are orange, oo B– areblack, and oo bb are albino. An orange snake wasmated to a black snake, and a large number of F1progeny were obtained, all of which were brown.When the F1 snakes were mated to one another, theyproduced 100 brown offspring, 25 orange, 22 black,and 13 albino.a. What are the genotypes of the F1 snakes?b. What proportions of the different colors wouldhave been expected among the F2 snakes if the twoloci assort independently?
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