The individual with genotype AaBbCCDdEE can make many kinds of gametes. Which of the following is the major reason?

The individual with genotype AaBbCCDdEE can make many kinds of gametes. Which of the following is the major reason? 






A) segregation of maternal and paternal alleles
B) recurrent mutations forming new alleles
C) crossing over during prophase I
D) different possible alignments of chromosomes
E) the tendency for dominant alleles to segregate together








Answer: D


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