D. <span>An allele is one version of a gene. </span>hope this helps.
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Basilar membrane is the structure that is responsible for supporting the organ of corti. It is located within the cochlea of the inner ear. In addition basilar membrane is stiff structural element that separate two liquid- filled tubes that runs along the coil of the cochlea.
I think it is compound, that is a I think so I might be wrong
Aight so basically the chromatid is the two threadlike strands for when it divides and then the chromatin is the material of the chromosomes of organisms it is made of RNA Protein and DNA