Aheterozygote is an individual with:
a. a different paternal and maternal allele at a particular locus.
b. the same paternal and maternal allele at a particular locus.
c. a dominant allele.
d. a recessive allele.

a) a different paternal and maternal allele at a particular locus

Explanation:  Hetero-zygote are referred as the organisms that represent the two different alleles of a particular gene. It can have different  individual paternal and maternal allele from a gene.They have the nature of establishing alleles that among the two alleles, one of them has a dominant approach. Therefore the correct option for the given  statement in the question is option(a) .

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion