Genes and Alleles

Front

What is a genotype?

Back

The genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is a phenotype?

Back

The phenotype is the observable characteristics or traits of an organism, influenced by its genotype and environment.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a specific gene (e.g., Ff).

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a specific gene (e.g., BB or gg).

Front

What is an allele?

Back

An allele is a variant form of a gene that can produce different traits.

Tags

NGSS.HS-LS3-2

Front

What is a trait?

Back

A trait is an observable characteristic of an organism, such as height, color, or shape.

Tags

NGSS.HS-LS3-1

Front

What is the difference between dominant and recessive alleles?

Back

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

Front

What is the relationship between genes and alleles?

Back

A gene is a segment of DNA that codes for a specific trait, while alleles are different versions of that gene.

Tags

NGSS.HS-LS3-1

Front

What is a Punnett square?

Back

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

Tags

NGSS.HS-LS3-2

Front

What is the significance of the letter representation in genotypes?

Back

Letters represent alleles; uppercase letters indicate dominant alleles, while lowercase letters indicate recessive alleles.