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ividuals who are heterozygous for both eye color and hair form are said to be doubly heterozygous, dihybrids. Dihybrids might arise from true-breeding parents, one parent being the double nozygous dominant and the other being the double homozygous recessive: Parents (P): AABB X aabb Offspring (F1): AB AaBb ab

ividuals who are heterozygous for both eye color and hair form are said to be doubly heterozygous, dihybrids. Dihybrids might arise from true-breeding parents, one parent being the double nozygous dominant and the other being the double homozygous recessive: Parents (P): AABB X aabb Offspring (F1): AB AaBb ab

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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B. The Dihybrid Cross Laboratory Model Individuals who are heterozygous for both eye color and hair form are said to be doubly heterozygous, or dihybrids. Dihybrids might arise from true-breeding parents, one parent being the double homozygous dominant and the other being the double homozygous recessive: Parents (P): AABB X aabb AB ab Offspring (F1): AaBb Question 2. Verify that the genotype of the F1 (above) is correct by doing the following: a. On the diagram, write the genotypes of the parental gametes in the space below each parent (P). (Double click on the diagram and it will open up in a drawing window. Double click on each circle and you will be able to write in it.) b. Verify that the gametes you have written combine to form the Fl genotype in the diagram. Notice that while the order of the alleles does not matter, we group alleles for the same trait together, with capital letters first. This makes it easier to recognize whether individuals have identical genotypes.
Transcribed Image Text:B. The Dihybrid Cross Laboratory Model Individuals who are heterozygous for both eye color and hair form are said to be doubly heterozygous, or dihybrids. Dihybrids might arise from true-breeding parents, one parent being the double homozygous dominant and the other being the double homozygous recessive: Parents (P): AABB X aabb AB ab Offspring (F1): AaBb Question 2. Verify that the genotype of the F1 (above) is correct by doing the following: a. On the diagram, write the genotypes of the parental gametes in the space below each parent (P). (Double click on the diagram and it will open up in a drawing window. Double click on each circle and you will be able to write in it.) b. Verify that the gametes you have written combine to form the Fl genotype in the diagram. Notice that while the order of the alleles does not matter, we group alleles for the same trait together, with capital letters first. This makes it easier to recognize whether individuals have identical genotypes.
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