Genetics Vocabulary Quiz

The gene is always expressed if one or more copies are present

• recessive

• homozygous

• allele

• dominant

Having two different alleles for a gene

• phenotype

• homozygous

• heterozygous

• genotype

An organism's physical appearance or visible traits.

• phenotype

• genotype

• allele

• homozygous

A physical characteristic of an organism

• trait

• dominant

• homozygous

• genotype

Having two identical alleles for a gene (dominant or recessive)

• genotype

• phenotype

• heterozygous

• homozygous

The possible versions of a gene

• phenotype

• allele

• homozygous

• character

The combination of alleles (letters) of gene

• phenotype

• genotype

• trait

• chromosome

condensed DNA in the form of an X

• allele

• chromosome

• trait

• genotype

Choose an example of heterozygous

• Hh

• HH

• hh

Choose ALL of the following that are an example of homozygous

• Rr

• rR

• rr

• RR