Genetics

What is an allele?

• A trait

• Different forms of a gene

• DNA

• Different types of parents

What is a genotype?

• Pair of alleles that determine a specific trait

• Observable physical trait

• A trait that is observed with only one copy of an allele

What is a trait?

• A physical characteristic passed down from your mom

• A behavioral characteristic passed down from your dad

• A physical or behavioral characteristic passed down from your parents

• A behavioral characteristic passed down by your mom

What is a dominant gene?

• A trait that is observed when there are one OR two copies of the allele

• A trait that is observed only when there are two copies of the allele

• A trait that can be hidden in a generation

A person who is homozygous for a trait can have a genotype of....

• AA, Aa

• Aa, aa

• AA, aa

• aa

If a person is heterozygous for a trait, their genotype can be...

• Aa

• AA, aa

• AA, Aa

• AA

What is the missing pairing?

• AA

• Aa

• aa

A tool used to predict the probability of offspring inheriting certain traits is called a ...

• karyotype

• Punnett Square

The physical expression of a trait is called the ...

• genotype

• phenotype

Genotype: TT

• homozygous dominant

• homozygous recessive

• heterozygous dominant