Genetics Unit 3-Mid-Unit

Front

What does genotype refer to?

Back

The possible combination of alleles in a gene.

Front

How many alleles does an offspring receive from each parent to determine a specific trait?

Back

One.

Front

What is the term for an organism's appearance or other detectable characteristic?

Back

Phenotype.

Front

If you cross a horse with WW and a horse with ww, what fraction of the offspring would be expected to have white hair?

Back

All.

Front

What is the inherited combination of alleles known as?

Back

Genotype.

Front

What is the definition of phenotype?

Back

The physical expression of the genes in an organism.

Front

What is heredity?

Back

The passing of traits from parents to offspring.

Front

What does it mean if an allele is dominant?

Back

It expresses its trait even when only one copy is present.

Front

What does it mean if an allele is recessive?

Back

It only expresses its trait when two copies are present.

Front

What is a homozygous genotype?

Back

A genotype with two identical alleles for a trait.