Genetics Review Flashcard

Front

What is the term for the passing of traits from parents to offspring?

Back

Heredity is the passing of traits from parents to offspring.

Front

What is the term for an organism that has two different alleles for a trait?

Back

Heterozygous refers to an organism with two different alleles for a trait, represented as Aa.

Front

What is the study of inheritance and variation of traits in living organisms called?

Back

Genetics is the study of inheritance and variation of traits in living organisms.

Front

What is the term for the specific combination of alleles an organism has for a particular gene?

Back

Genotype is the specific combination of alleles for a particular gene.

Front

If T stands for tall and t stands for short, what does a genotype of TT represent?

Back

A genotype of TT represents a homozygous dominant trait for tallness.

Front

What is the observable physical characteristic of an organism called?

Back

Phenotype is the observable physical characteristic of an organism.

Front

What is the term for an organism that has two identical alleles for a trait?

Back

Homozygous refers to an organism with two identical alleles for a trait, represented as AA or aa.

Front

What is a Punnett Square used for?

Back

A Punnett Square is used to predict the genetic outcomes of a cross between two organisms.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

Front

What is the term for different forms of a gene?

Back

Alleles are different forms of a gene.