The D gene controls pea plant height. The DD and dd genotypes confer tall and dwarf phenotypes, respectively. What is the relationship between D and d?
A) They are two possible heterozygous genotypes.
B) They are two possible homozygous genotypes.
C) They are alleles of the same gene.
D) They are two different plant chromosomes.
E) They are two different genes on the same chromosome.
Answer: C
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