Punnett Squares & Heredity

Front

What is a phenotype?

Back

A phenotype is the physical appearance or observable characteristics of an organism, such as red hair or blue eyes.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses, such as AA or Aa.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Aa.

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present, represented by a capital letter.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present, represented by a lowercase letter.

Front

What is the purpose of a Punnett square?

Back

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

Front

What does it mean for an allele to be expressed?

Back

An allele is expressed when its trait is visible in the phenotype of the organism.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the physical appearance of an organism.

Front

What is an example of a trait that cannot be passed on to offspring?

Back

Scars on a leg are an example of a trait that cannot be passed on to offspring.