Flashcardizz: Pedigrees

Front

What are autosomes?

Back

Chromosomes that are NOT sex chromosomes.

Front

How many human autosomes are there?

Back

22.

Front

What is the genotype of an individual with two recessive alleles?

Back

aa.

Front

What does it mean if a parent is heterozygous for a recessive trait?

Back

They are carriers of the trait.

Front

What are the genotypes of parents if both are heterozygous?

Back

Both Aa.

Front

Define genotype.

Back

The genetic constitution of an individual.

Front

Define phenotype.

Back

The observable characteristics of an individual.

Front

What is a dominant allele?

Back

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

Front

What is a recessive allele?

Back

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

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross.