In a population of flowering plants, there are two alleles for flower color. One is dominant and is represented A, one is recessive and is represented a.  The allele frequency of A is 0.7. What is the allele frequency of a?单项选择题

A

1.0

B

0.7

C

0.3

D

0.49

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In a population of 1000 flowering plants there are two possible alleles for flower color, one dominant and one recessive. 400 plants are homozygous dominant, 200 plants are heterozygous, and 400 plants are homozygous recessive. What is q in this population, if q represents the frequency of the recessive allele?

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