Genetics Vocabulary #1

Front

Tt is an example of _____ alleles

Back

heterozygous

Front

Which of the following is heterozygous: FF, tt, Gg, RR?

Back

Gg

Front

Having two different genes for a trait (sometimes called hybrid) is known as _____

Back

heterozygous

Front

Height, fur color, shape of seeds, and texture are all examples of _____

Back

traits

Front

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?

Back

Bb

Front

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

Back

genotype

Front

What do we call the observable characteristics of an organism?

Back

phenotype

Front

If an organism has two identical alleles for a trait, it is said to be _____

Back

homozygous

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 Punnett square used for?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.