You are doing a genetics experiment with Drosophlia melanogaster, the fruit fly. In the "P" generation, you cross 2 true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All the flies in the F1 generation are brown and have normal wings. Assume that the genes are not found on sex chromosomes. Indicate color alleles as "B" for brown, "b" for black, "W" for normal wings, "w" for wingless. (A) What are the genotypes in the P generation? (B) What are the genotypes of the flies in the F1 generation?

You are doing a genetics experiment with Drosophlia melanogaster, the fruit fly. In the "P" generation, you cross 2 true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All the flies in the F1 generation are brown and have normal wings. Assume that the genes are not found on sex chromosomes. Indicate color alleles as "B" for brown, "b" for black, "W" for normal wings, "w" for wingless. (A) What are the genotypes in the P generation? (B) What are the genotypes of the flies in the F1 generation?

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Description: You are doing a genetics experiment with Drosophlia melanogaster, the fruitfly. In the "P" generation, you cross 2 true-breeding flies. The female parentis brown and wingless and the male parent is black with normal wings. Allthe flies in the F1 gen

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 2TYU: The F1 flies described in question 1 were mated with brown-eyed flies from a true-breeding line....

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You are doing a genetics experiment with the fruit fly. In the “P” generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Assume the genes are not found on a sex chromosome. Indicate the body color alleles with B and b and the wing size alleles with N and n. 1) When the flies in (b) and (c) are mated, you count 1600 offspring in the F2 generation. If the body color gene and wing type genes are not linked, how many flies of each phenotype would you expect? (Be sure to use a Punnett square for a dihybrid cross to show your work.) Show your work: Expected flies if the loci are unlinked: _________: # of brown, winged flies (Genotype: ______________) _________: # of black, winged flies (Genotype: ______________) _________: # of black, wingless flies (Genotype: ______________) _________: # of brown, wingless flies (Genotype:…
You are doing a genetics experiment with the fruit fly. In the “P” generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Assume the genes are not found on a sex chromosome. Indicate the body color alleles with B and b and the wing size alleles with N and n. a) The genotypes of the flies in the P generation are: Female: ______________ Male: ______________ b) The genotype of the flies in the F1 generation is: _____________ c) You now take an F1 female and cross her to a true-breeding black, wingless male. This male’s genotype is: ______________
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You are doing a genetics experiment with the fruit fly. In the “P” generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Answer all the questions below. 3d. You count 1600 offspring in the F2 generation. If the wing and the color traits were linked and no recombination occurred, what would you expect the numbers of: 1. brown winged flies (BbNn) 2. black winged flies (Bbnn) 3. brown wingless flies (bbNn) 4. black wingless flies (bbnn). 3e. What is the genetic distance between the color and wing genes when you count the F2 generation as 85 brown winged flies, 728 black winged flies, 712 brown wingless flies, and 75 black wingless flies.
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