Biology > EXAM > SC160 Basic Biology Online Exam 5 Answers (Ashworth College) EXAM 5 & 6 (All)

SC160 Basic Biology Online Exam 5 Answers (Ashworth College) EXAM 5 & 6

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Part 1 of 2 - Question 1 of 40 The presence of freckles is due to a dominant allele. Four percent of the individuals in a particular population lack freckles. Use the Hardy-Weinberg formula to c... alculate the percentage of individuals in this population who are homozygous dominant for freckles. A. 32% B. 4% C. 64% D. 80% Question 2 of 40 The original source of genetic variation that serves as the raw material for natural selection is: A. mutation. B. gene flow. C. sexual recombination. D. random fertilization. Question 3 of 40 Which of the following is an example of disruptive selection? A. The birth weight at which newborn humans are most likely to survive and the average weight of newborn humans are about the same. B. There is an increase in antibiotic-resistant strains of bacteria. C. There is an increase in the number of different breeds of dog. D. Garter snakes with different coloration patterns behave differently when threatened. [Show More]

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