Genetics Intro Review

Front

What is a purebred organism?

Back

An organism that has never mixed traits and is homozygous.

Front

What is a dominant allele?

Back

An allele whose trait always shows up in the organism when the allele is present.

Front

What phenotype do AA and Aa genotypes show?

Back

Dominant phenotype.

Front

What does homozygous recessive mean?

Back

An organism with two identical recessive alleles, such as 'tt'.

Front

What characteristic is not inherited from parents?

Back

Hair style.

Front

What is a recessive allele?

Back

An allele whose trait is masked by a dominant allele.

Front

What does heterozygous mean?

Back

An organism with two different alleles for a trait, such as 'Tt'.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by letters.

Front

What is a phenotype?

Back

The physical appearance or observable traits of an organism.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous has identical alleles; heterozygous has different alleles.