U3L1 Mastery Check Genetics (1st)

Front

The passing of physical characteristics from parent to offspring is __________.

Back

heredity

Front

Which of the following alleles is homozygous (purebred) recessive?

Back

tt

Front

What does heterozygous mean?

Back

An organism that has different alleles(genes) for a trait.

Front

Why are your chromosomes arranged in pairs?

Back

Because you get one from your mom and one from your dad.

Front

An organism’s genetic makeup or allele combination is called __________.

Back

Genotype

Front

What is the term for the observable traits of an organism?

Back

Phenotype

Front

What are alleles?

Back

Different forms of a gene.

Front

What is a dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What is a recessive allele?

Back

An allele that only expresses its trait when two copies are present.

Front

What is the role of chromosomes in genetics?

Back

They carry genetic information in the form of genes.