According to evolutionary theory on kin selection, genetically identical twins should help each other more than fraternal twins.

Question

Quizplus · Accepted Answer

Kin selection theory suggests that individuals are more likely to help relatives with whom they share a greater proportion of genes. Since identical twins share 100% of their genes, compared to fraternal twins who share on average 50%, identical twins are predicted to help each other more according to this theory.

According to Evolutionary Theory on Kin Selection, Genetically Identical Twins