Dominant and Recessive 3

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a trait, such as Gg.

Front

What is a homozygous dominant genotype?

Back

A homozygous dominant genotype has two identical dominant alleles for a trait, such as MM.

Front

What is a dominant gene?

Back

A dominant gene is one that expresses its trait even when only one copy is present, represented by a capital letter (e.g., H for black hair).

Front

What is a recessive gene?

Back

A recessive gene only expresses its trait when two copies are present, represented by a lowercase letter (e.g., h for yellow hair).

Front

What color hair would a guinea pig have with genotype Hh?

Back

The guinea pig would have black hair because H (dominant) is present.

Front

What is a gene?

Back

A gene is a section on a chromosome that contains genetic information for one trait.

Front

What is an allele?

Back

An allele is a variant form of a gene that can result in different traits.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

What is the genotype for a wrinkled pea plant?

Back

The genotype for a wrinkled pea plant is rr.