Dominant & Recessive Traits Vocab Review

Front

What is incomplete dominance?

Back

A genetic situation where neither allele is completely dominant, resulting in offspring that are a blend of both alleles.

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What is genotype?

Back

The genetic makeup of an organism, expressed as a combination of letters (e.g., AA, Aa, aa).

Front

What is a recessive allele?

Back

The weaker allele that is expressed only when two copies are present (e.g., aa).

Front

What does homozygous mean?

Back

When two alleles for a trait are identical (e.g., AA or aa).

Front

What are alleles?

Back

Different versions of a gene that determine specific traits (e.g., A and a for a gene controlling flower color).

Front

What is a dominant allele?

Back

The stronger allele that is expressed in the phenotype even when only one copy is present (e.g., A in Aa).

Front

What is phenotype?

Back

The observable characteristics or traits of an organism, resulting from the genotype (e.g., purple flowers).

Front

What is codominance?

Back

A genetic situation where both alleles are fully expressed in the phenotype (e.g., AB blood type).

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the physical expression of traits.

Front

What does heterozygous mean?

Back

When two alleles for a trait are different (e.g., Aa).