Agene with the sequence attcattca underwent duplication after a few generations. which sequence represents this gene after the mutation?

a. attcattca
b. acttactta
c. attcacattca
d. atccattca
e. atcattca

C. ATTCACATTCA

Explanation:

Duplication mutation occurs when the whole nucleotide sequence of a gene or part of it is copied. Hence, a chromosome has more than one copy of a gene or part of it.  

The given gene sequence is "ATTCATTCA". In option C, the nucleotides at position 4 and 5 are duplicated. This results in the final gene sequence as "ATTCACATTCA". The duplicated segment is shown by "CACA" in the final gene sequence.  

the denominator has a very specific role.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).