Final answer:
In the Hymenoptera order, sisters share about 75% of their genes due to haplodiploidy, where they receive all of their father's genes and half of their mother's, while parents and offspring share 50% of genes. Thus, sisters are more closely related to each other than to their parents or offspring, and female Hymenoptera are diploid.
Step-by-step explanation:
The student's question is related to the genetic relationships within the Hymenoptera order, which includes insects such as bees, wasps, and ants. Hymenoptera have an unusual genetic system called haplodiploidy, where females develop from fertilized eggs and are diploid, while males develop from unfertilized eggs and are haploid. In this system, sisters share approximately 75% of their genes due to the way that haplodiploidy works. This is because sisters receive all their father's genes (as he is haploid) and half of their mother's genes, averaging out higher than the typical 50%. In comparison, parents and offspring share 50% of their genes. Therefore, in this unique case, sisters are more genetically related to each other than they are to their own parents or offspring. Since female insects in this order have two sets of chromosomes, they are diploid.