Question

question 1

the best definition of a purebred plant is one that______.

produces sterile offspring when cross - fertilized

self - fertilizes to produce hybrid offspring

cannot be cross - fertilized

self - fertilizes to produce offspring identical to the parent

Explanation:

A purebred plant is homozygous for a trait. When it self - fertilizes, since it has two identical alleles for the trait, the offspring will inherit those same alleles and be identical to the parent in terms of that trait.

• For the option “produces sterile offspring when cross - fertilized”, purebred plants are not sterile in general when cross - fertilized.
• For “self - fertilizes to produce hybrid offspring”, hybrids have different alleles (heterozygous), while purebreds are homozygous.
• For “cannot be cross - fertilized”, purebred plants can be cross - fertilized (e.g., in Mendel's experiments).

Answer:

self - fertilizes to produce offspring identical to the parent