Genetics Review - 7th Grade

Front

What does it mean to be heterozygous?

Back

Having two different alleles for a particular trait.

Front

What does the genotype Tt represent?

Back

It represents heterozygous alleles.

Front

What blood type does a person with the alleles IAi have?

Back

Type A, because A is dominant and i is recessive.

Front

What is an example of a phenotype?

Back

Red hair.

Front

What is another name for selective breeding?

Back

Artificial selection.

Front

What is heredity?

Back

The passing of traits from parents to offspring.

Front

What are alleles?

Back

Different forms of a gene that determine specific traits.

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 does homozygous mean?

Back

Having two identical alleles for a particular trait.