Dominant vs Recessive

Front

What is a dominant trait?

Back

A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present. It masks the effect of a recessive allele.

Front

What is a recessive trait?

Back

A recessive trait is a genetic trait that is only expressed in the phenotype when two copies of the allele are present. It is masked by a dominant allele.

Front

What does the genotype 'aa' represent?

Back

The genotype 'aa' represents a recessive trait.

Front

What does the genotype 'AA' represent?

Back

The genotype 'AA' represents a homozygous dominant trait.

Front

What does the genotype 'Aa' represent?

Back

The genotype 'Aa' represents a heterozygous dominant trait.

Front

In pea plants, if purple flowers are dominant to white flowers, what is the phenotype of a plant with genotype 'AA'?

Back

The phenotype is purple flowers.

Front

In pea plants, if purple flowers are dominant to white flowers, what is the phenotype of a plant with genotype 'Aa'?

Back

The phenotype is purple flowers.

Tags

NGSS.HS-LS3-1

Front

In pea plants, if purple flowers are dominant to white flowers, what is the phenotype of a plant with genotype 'aa'?

Back

The phenotype is white flowers.

Tags

NGSS.HS-LS3-1

Front

What is the relationship between alleles and traits?

Back

Alleles are different forms of a gene that determine specific traits. Dominant alleles mask recessive alleles in determining the phenotype.

Tags

NGSS.HS-LS3-2

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.