obligatory sex is a genotype post, but what kind of biologist thinks sex is a phenotype?
Ver archivo adjunto 3605767 oh. Unless he thinks that biological sex is defined by genitals, which it isn't, but that would make him retarded. sex is defined by a genetically determined ability to produce a certain gamete, not by how the genotype outwardly expresses itself. I don't really know how anyone can argue this, I don't think I could have made this argument in 6th grade biology without getting laughed at. Also, it's somewhat ironic that he brings up hermaphroditic animals that can change sex and proves by that they can change sex by stating that they begin producing the opposite gamete, which just contradicts his point completely. He says the ribbon eel's phenotype changes as it turns into a female (by losing its yellow stripe), yet this is completely incidental to it beginning to produce eggs and is not why scientists consider an eel's sex to have changed. Ask him if a male eel starts laying eggs but doesn't lose its yellow stripe if that eel is a male or a female. he'll either have to agree that gamete production is the distinguishing factor between male and female, or he'll have to argue that a male eel can lay eggs.
anyway:
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it included the bulge on this one, very tasteful.