Genetics

Front

What is the term for having two different genes for a trait?

Back

Heterozygous

Front

What is an allele whose trait only shows up when no dominant allele is present?

Back

Recessive allele

Front

What is the term for having two of the same genes for a trait?

Back

Homozygous

Front

What does the genotype Tt represent?

Back

Heterozygous

Front

In a genetic cross of AA x aa, what is the genotype of all offspring?

Back

Aa

Front

What is the definition of a dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What is the definition of a recessive allele?

Back

An allele that only expresses its trait when two copies are present.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by letters (e.g., AA, Aa, aa).

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.