Question

if a scientist wanted to follow mendel’s experiment with a different kind of plant, which type of plant would she examine?
a plant that cannot self - pollinate.
a plant that has only recessive alleles.
a plant that has three alleles for a trait.
a plant that has only two alleles for a trait.

Explanation:

Mendel's experiments relied on plants (like pea plants) with traits controlled by two alleles (one from each parent, following simple dominant - recessive inheritance). A plant that cannot self - pollinate would be hard to control for pure breeding (Mendel used self - pollinating plants initially for pure lines). A plant with only recessive alleles can't show the dominant - recessive interaction he studied. A plant with three alleles for a trait would not follow the simple two - allele model he used. A plant with two alleles for a trait matches the genetic model Mendel worked with, as his laws of segregation and independent assortment were based on traits with two alleles (dominant and recessive).

Answer:

D. A plant that has only two alleles for a trait.