Genes and Alleles

Front

What is a Phenotype?

Back

The observable expression of a trait, such as brown eyes.

Front

What does Heterozygous mean?

Back

Having two different alleles for the same trait.

Front

What is a Trait?

Back

An observable characteristic of an organism, such as height or eye color.

Tags

NGSS.HS-LS3-1

Front

What is a Genotype?

Back

The genetic makeup of an organism, represented by alleles.

Tags

NGSS.HS-LS3-2

Front

What is an Allele?

Back

A variant form of a gene that can produce different traits.

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 does Homozygous mean?

Back

Having two identical alleles for a particular trait.

Front

What is the relationship between Genotype and Phenotype?

Back

Genotype determines the potential traits (phenotype) that can be expressed.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Front

What is a Chromosome?

Back

A structure made of DNA that carries genetic information.

Tags

NGSS.HS-LS3-1

Front

What is a Genetic Cross?

Back

A method used to predict the genetic outcome of a breeding experiment.

Tags

NGSS.HS-LS3-3