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Earth and Life Sciences Exam with Questions and Answers
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Earth and Life Sciences
Earth and Life Sciences
Earth and Life Sciences Exam with Questions and Answers A geneticist crosses two heterozygous pea plants for seed color, where yellow (Y) is dominant over green (y). What is the probability that an offspring will have green seeds? a. 25% b. 50% c. 75% d. 100% Correct Answer: a. 25% Rationale: Crossing Yy × Yy produces genotypes YY, Yy, Yy, and yy. Only yy expresses the recessive green phenotype, representing 1 out of 4 offspring or 25%. A fisheries manager increases the fish harvest...
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