Ch 5 Heredity

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 (letters)

• Observable physical trait

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

What is a phenotype?

• Pair of alleles that determine a trait

• Observable physical trait

• Different forms of a gene

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

What is the missing pairing?

• AA

• Aa

• aa

Made up of segments of DNA and are passed from parent to child.

• Protein

• Trait

• Genome

• Gene

Which set of alleles are considered heterozygous?

• HH

• Hh

• HR

• hh

Aa, DD, Bb, yy are all examples of _______

• genotypes

• phenotypes

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

• genotype

• phenotype

Genotype: TT is ...

• homozygous dominant

• homozygous recessive

• heterozygous