the principal material in this work is a flower resulting from a cross between a gerbera and a daisy, which decays during its display.

the correct answer is - ability to find a mate

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

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.