There is a gene in sand sharks that determines whether or not there is an anal fin. If a male sand shark is heterozygous for the presence of an anal fin (he is Aa), what are the possible sperm genotypes he can produce?       his sperm cells will carry either an A or an a   his sperm cells will carry either AA, Aa, or aa   half his sperms will carry AA and half will carry aa   None of the above

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Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.