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Use the information below for questions 19-20. In deer mice, red eyes (r is recessive to normal black eyes (R). Two mice with black eyes are crossed. They produce two offspring (F1), one with red eyes and one with black eyes. 19. What are the genotypes of the offspring? a. RR and rr b RR and Rr c, rr and Rr d. Rr and Rr
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Answer 19 c. rr and Rr

Explanation: Since black eyes is dominant R; thus parents may be rR and rR so if they cross they will produce

rr and rR so one will be red and one will be Black .

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