Genes & Alleles

Front

Genes always appear in pairs. Your parents donate ________ allele for every trait.

Back

1

Front

Segments of DNA are called _______________________

Back

Genes

Front

A segment of DNA that codes for a trait is called a _____________.

Back

gene

Front

Long strands of DNA are wrapped into _____________.

Back

Chromosome

Front

What is the definition of Phenotype?

Back

How a trait is expressed (what it looks like or what it does)

Front

What are alleles?

Back

Different forms of a gene that determine specific traits.

Front

What is a genotype?

Back

The combination of alleles for a particular trait.

Front

What is the role of chromosomes in genetics?

Back

They carry genes and are made of DNA.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present; 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.