Heredity Flashcard

Front

Alleles are represented by _______________.

Back

Letters

Front

What is a trait?

Back

Characteristic or feature

Front

If you have an XY chromosome will you be a boy or girl?

Back

Boy

Front

Determine if 'Brown hair' is either a genotype or phenotype.

Back

Phenotype

Front

Determine if 'Aa' is either a genotype or phenotype.

Back

Genotype

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by letters (e.g., Aa, BB).

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene (e.g., Aa).

Front

What is a dominant allele?

Back

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