18 The allele for sickle cell disease is an example of

Last updated: 5/18/2023

18 The allele for sickle cell disease is an example of heterozygote advantage because a Having a single sickle cell allele is harmful to human health b Having a single sickle cell allele protects a person from malaria c Sickle cell disease is no longer a dangerous disease in humans d Sickle cell alleles are common only in Africa 19 Pterosaurs are an extinct group of flying reptiles from the Mesozoic era In pterosaurs the 5th finger bone our pinky has elongated to become the wing but in birds it is the 2nd finger bone pointer finger that forms the wing In this example wings are a Homology b Convergence c Both homology and convergence d Neither homology nor convergence