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In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes short tails, while mice with at least one copy of the Tallele have long tails. Doubly heterozygous F1 mice are testcrossed to albino short-tailed mice, and the 1000 progeny have the following phenotypes: 442 offspring are albino with long tails 458 offspring are brown with short tails 46 offspring are albino with short tails 54 offspring are brown with long tails Based on these data, what were the genotypes of the pure-breeding parental lines that were crossed to generate the F1 mice? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a b с d aaTT x AAtt AATT x aatt Either aaTT x AAtt or AATT x aatt AaTtx AaTt

In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes short tails, while mice with at least one copy of the Tallele have long tails. Doubly heterozygous F1 mice are testcrossed to albino short-tailed mice, and the 1000 progeny have the following phenotypes: 442 offspring are albino with long tails 458 offspring are brown with short tails 46 offspring are albino with short tails 54 offspring are brown with long tails Based on these data, what were the genotypes of the pure-breeding parental lines that were crossed to generate the F1 mice? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a b с d aaTT x AAtt AATT x aatt Either aaTT x AAtt or AATT x aatt AaTtx AaTt

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes short tails, while mice with at least one copy of the Tallele have long tails. Doubly heterozygous F1 mice are testcrossed to albino short-tailed mice, and the 1000 progeny have the following phenotypes: 442 offspring are albino with long tails 458 offspring are brown with short tails 46 offspring are albino with short tails 54 offspring are brown with long tails Based on these data, what were the genotypes of the pure-breeding parental lines that were crossed to generate the F1 mice? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a b с d aaTT x AAtt AATT x aatt Either aaTT x AAtt or AATT x aatt AaTt x AaTt
Transcribed Image Text:In mice, the a mutation results in albino mice, while mice with at least one copy of the A allele are brown. The t mutation causes short tails, while mice with at least one copy of the Tallele have long tails. Doubly heterozygous F1 mice are testcrossed to albino short-tailed mice, and the 1000 progeny have the following phenotypes: 442 offspring are albino with long tails 458 offspring are brown with short tails 46 offspring are albino with short tails 54 offspring are brown with long tails Based on these data, what were the genotypes of the pure-breeding parental lines that were crossed to generate the F1 mice? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a b с d aaTT x AAtt AATT x aatt Either aaTT x AAtt or AATT x aatt AaTt x AaTt
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