Biology 4.09 Quiz
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Which of the following is the best definition of a gene?
a specific segment of DNA on a chromosome
Which of the following is a variant of a gene?
an allele
You are studying the inheritance of two characteristics in plants: red flowers (RR and Rr), which are dominant to yellow flowers (rr), and green leaves (GG and Gg), which are dominant to yellow leaves (gg). You cross a double heterozygous (RrGg) with a double recessive (rrgg), and expect to see a 1:1:1:1 ratio in the offspring. Instead, you see these results: Which phenomenon would you hypothesize accounts for the pattern you see?
crossing-over
What do sexual reproduction, mutation, and crossing-over generate in a population?
genetic diversity
