Two alleles of a given gene exist in a population: ctgt and tgtc. (note: the codes given are only for the transcribed strand of the dna in the two alleles.) three possible single crossover events are possible between these two alleles. as a result of the three different crossover events, how many total new alleles (new sequences of dna) could be produced?
choice a., 3
choice b., 4
choice c., 5
choice d., 6
choice e., 12

6 alleles.

Explanation:

Alleles may be defined as the alternative form of a single gene. The alleles are present on the same chromosome of a particular gene.

CTGT and TGTC are the two alleles of a given gene. Three single crossovers exist between the two alleles. the single crossover can produce two new allele so the three crossovers can produce six new alleles.

Thus, the correct answer is option (D).

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