Genetics Quiz

If an organism has 2 identical alleles for a particular trait then it is

• heterozygous

• homozygous

• hybrid

A pea plant that has 2 different alleles for a trait means they are

• homozygous

• heterozygous

• purebred

What is an allele?

• same forms of a gene

• different forms of a gene

• 3 letters

A cross involving a single trait is known as?

• dihybrid

• monohybrid

• hybrid

What is an example of a heterozygous genotype?

• AA

• aa

• AAaa

• Aa

The scientific study of how traits are inherited by offspring from their parents is called

• Heredity

• Genetics

• Mendelism

• Phenotype

The term phenotype refers to an organisms _______

• Genetic code

• Physical appearance

• Alleles

• None of these are correct

A individual who has two of the same allele is said to be

• Homozygous

• Homologous

• Heterozygous

• Diplozygous

• All of these answers are correct

In our Tt example, capital T means ___, and little t means ___

• recessive, dominant

• dominant, recessive

• homozygous, heterozygous

• good, bad

Who is considered the founder of the scientific study of genetics

• Louis Pasteur

• Isaac Newton

• Marie Curie

• Gregor Mendel