Is the number of different species represented in an ecological community, landscape or region. is simply a count of species, and it does not take into account the abundances of the species or their relative abundance distributions.

species richness,

Explanation:

species richness is the number of different species represented in an ecological community, landscape or region. _species richness, is simply a count of species, and it does not take into account the abundances of the species or their relative abundance distributions.

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multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.