Question

1. use your notes to complete each definition.

purebred - also called _______________ and consists of gene pairs with genes that are the ____.
hybrid - also called _______________ and consists of gene pairs with genes that are ________.
genotype is the actual _______ makeup represented by ________.
phenotype is the __________ appearance of a trait, such as a _________ body color.

Explanation:

To solve this, we recall key genetics terms:

• Purebred (also homozygous) has identical gene pairs (e.g., AA or aa).
• Hybrid (also heterozygous) has different gene pairs (e.g., Aa).
• Genotype is the genetic makeup, represented by alleles (gene combinations).
• Phenotype is the physical appearance (e.g., brown body color).

Answer:

Purebred - Also called \underline{homozygous} and consists of gene pairs with genes that are the \underline{same (e.g., AA or aa)}.
Hybrid - Also called \underline{heterozygous} and consists of gene pairs with genes that are \underline{different (e.g., Aa)}.
Genotype is the actual \underline{genetic} makeup represented by \underline{alleles (or gene combinations)}.
Phenotype is the \underline{physical} appearance of a trait, such as a \underline{brown (or other observable trait)} body color.