Genetics Test

Front

A version of a gene is called a(n)

Back

allele

Front

A trait that is expressed if one copy of the allele is present is a(n)

Back

dominant trait

Front

An organism’s genetic makeup; the pair of alleles for a trait is called a(n)

Back

genotype

Front

An organism’s physical expression of a trait is called a(n)

Back

phenotype

Front

What is it called when both alleles in a genotype are the same?

Back

Homozygous

Front

What is it called when the alleles in a genotype are different?

Back

Heterozygous

Front

What are physical characteristics of an organism?

Back

Traits

Front

In a Punnett square, a lower case letter stands for a ____________ allele.

Back

recessive

Front

What do we call the physical expression of the genetic material of an organism?

Back

phenotype

Front

Which of the following alleles is homozygous (purebred) recessive? Options: Tt, tt, TT, t

Back

tt