Insects has a broad range of species and they are able to easily adapt according to their surroundings, hence increasing their survivability rate
For many species, there are often regional differences in their genes, although most of the time this differences aren't noticeable in their outward appearance.
I think the answer to this is D.
Answer: One parent is IAi and the other parent is IBi
Explanation: As this trait is codominant, the child can inherited IA, IB or i.
Tina has type O, which means she is ii and her sister is AB, so her genotype is IAIB. Now, to have a child with a recessive trait both parents has to carry at least one allele for the recessive, i. Rosa is type AB which means she had to have inherited one allele IA from one of her parents and the other IB from the other parent. Thus, one parent is IAi and the other is IBi.
