GENETICS VOCABULARY

Front

What is the physical or visible appearance of an organism?

Back

Phenotype

Front

What is the term for the genetic makeup of an organism?

Back

Genotype

Front

What do we call an organism with two identical alleles for a trait?

Back

Homozygous

Front

What do we call an organism with two different alleles for a trait?

Back

Heterozygous

Front

What is an allele?

Back

Different forms of a gene, such as R or r.

Front

What is the term for an allele that masks the effect of another allele?

Back

Dominant

Front

What is the term for an allele whose effect is masked by a dominant allele?

Back

Recessive

Front

What is the genotype for a homozygous recessive organism?

Back

aa or bb

Front

What is the genotype for a homozygous dominant organism?

Back

AA or BB

Front

What is the genotype for a heterozygous organism?

Back

Aa or Bb