Primavera Biology B Unit 3: Genomics Questions With Complete Solutions
CHECKPOINT 12 Genes located close together on a chromosome tend to be inherited together. What is this called? correct answer: genetic linkage Which of the following genes are linked in pea plants? correct answer: flower color and pollen-grain shape A Punnett square incorrectly predicts the outcome of a dihybrid cross. There are only two phenotypes in the F2 offspring instead of four. Why? correct answer: The genes are completely linked. A Punnett square predicts that the ratio of phenotypes in the F2 offspring of a dihybrid cross are 9:3:3:1. What would cause the actual ratio to be different? Select all that apply. correct answer: genetic linkage partial genetic linkage What is a genetic map? correct answer: a diagram showing where genes are located along a chromosome How does linkage help to create genetic maps? Select all that apply. correct answer: Linkage strength is a direct indicator of the distance between genes and markers. Weak linkage between two genes on the same chr
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