BIO. 3 Genetics Test

Front

What does genotype refer to?

Back

The possible combination of alleles in a gene.

Front

What is codominance in inheritance patterns?

Back

A situation where both alleles in a heterozygote are fully expressed.

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

What is the difference between genotype and phenotype?

Back

Genotype is the genetic makeup, while phenotype is the physical appearance.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What are polygenic traits?

Back

Traits that are controlled by multiple genes.

Front

What is incomplete dominance?

Back

A situation where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

If a heterozygous tall pea plant (Tt) is crossed with a short pea plant (tt), what are the possible genotypes of the offspring?

Back

50% Tt, 50% tt.

Front

What is the definition of multiple alleles?

Back

A situation where a gene has more than two alleles.