genetics vocabulary

Front

What are the different forms of a trait that make up a gene?

Back

Allele

Front

What do you call a purebred organism with the same gene pair?

Back

Homozygous

Front

What is the term for the genetic makeup of an organism, such as Tt, BB, or rr?

Back

Genotype

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

What do you call a hybrid organism with a different gene pair?

Back

Heterozygous

Front

What is the term for the observable characteristics of an organism?

Back

Phenotype

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

Front

What is a trait?

Back

A characteristic or feature of an organism, such as eye color or height.

Front

What is the role of DNA in genetics?

Back

DNA carries the genetic information that determines the traits of an organism.

Front

What is a gene?

Back

A segment of DNA that contains the instructions for building a specific protein or trait.