Question

1. the segment of dna that controls a hereditary trait.

\ttrait
\tgene
\tallele
\tdominant allele

Explanation:

To solve this, we analyze each option:

• A "trait" is a characteristic (e.g., eye color), not a DNA segment.
• A "gene" is defined as a segment of DNA that controls a hereditary trait.
• An "allele" is a variant form of a gene.
• A "dominant allele" is a type of allele that expresses its trait over others.

So the correct term for a DNA segment controlling a hereditary trait is "gene".

Answer:

The correct option is the one labeled "gene" (the third option from the left, with the label "gene" below the radio button).