EBK HUMAN BIOLOGY
11th Edition
ISBN: 9780100545939
Author: MCMILLAN
Publisher: YUZU
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Chapter 19, Problem 11CT
You decide to breed a pair of guinea pigs, one black and one white. In guinea pigs, black fur is caused by a dominant allele (B) and white is due to homozygosity for a recessive allele (b) at the same locus. Your guinea pigs have seven offspring, four black and three white. What are the genotypes of the parents? Why is there a 1:1 ratio in this cross?
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A certain cricket species can be green or orange and the difference is
determined by alleles of a single gene. You have a true-breeding green cricket
line, and cross one of these to an orange cricket of unknown genotype found in
the wild. Half the F1 progeny are green and the other half are orange.
a. On your own paper, draw by hand a Punnett Square for the cross described
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true-breeding line where the progeny are all orange. Not expecting a Punnett
Square here, just something showing the genotypes of both parents.
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You are working for a parakeet breeder that has some green birds and some blue birds. You
want to determine which feather color is dominant. You cross a blue male to each of two
green females. In the first cross, the blue male is crossed to a green female named Gabby,
resulting in 2 green and 2 blue offspring. In the second cross, the same blue male is
crossed to a green female named Gail, resulting in 5 green offspring. Based on these
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●
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The cross between the male and Gabby is called a [ Select]
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Chapter 19 Solutions
EBK HUMAN BIOLOGY
Ch. 19 - Define the difference between (a) gene and allele,...Ch. 19 - Prob. 2RQCh. 19 - What is probability, and how is it applied in...Ch. 19 - What is independent assortment? Does independent...Ch. 19 - Alleles are ___________. a. alternate forms of a...Ch. 19 - A heterozygote has _____. a. only one of the...Ch. 19 - Prob. 3SQCh. 19 - Offspring of a cross AA aa are ______. a. all AA...Ch. 19 - Prob. 5SQCh. 19 - Prob. 6SQ
Ch. 19 - Which statement best fits the principle of...Ch. 19 - Prob. 8SQCh. 19 - Prob. 9SQCh. 19 - Prob. 10SQCh. 19 - One gene has alleles A and a. Another has alleles...Ch. 19 - Still referring to Problem 1, what will be the...Ch. 19 - Go back to Problem 1, and assume you now study a...Ch. 19 - The young woman shown at right has albinismvery...Ch. 19 - When you decide to breed your Labrador retriever...Ch. 19 - The ABO blood system has been used to settle cases...Ch. 19 - Prob. 7CTCh. 19 - A man is homozygous dominant for ten different...Ch. 19 - Prob. 9CTCh. 19 - Bill and Marie each have flat feet, long...Ch. 19 - You decide to breed a pair of guinea pigs, one...
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