Genetics

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What are multiple alleles?

Back

Multiple alleles refer to a situation where a single gene has three or more different forms (alleles) that can exist in a population.

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What is heredity?

Back

Heredity is the passing of traits from parents to offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What do capital letters of an allele represent?

Back

Capital letters of an allele represent dominant traits.

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What is a Punnett Square used for?

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A Punnett Square is used to predict the probability of offspring inheriting particular traits from their parents.

Tags

NGSS.HS-LS3-2

Front

What is the probability of having a green-skinned Martian if one parent is heterozygous (Gg) and the other is homozygous recessive (gg)?

Back

There is a 50% chance to have a green-skinned Martian.

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

Front

What is a homozygous genotype?

Back

A homozygous genotype has two identical alleles for a trait, either dominant (AA) or recessive (aa).

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a trait, one dominant and one recessive (Aa).

Tags

NGSS.HS-LS3-2

Front

What is codominance?

Back

Codominance is a genetic scenario where both alleles in a heterozygote are fully expressed, resulting in a phenotype that is neither dominant nor recessive.

Front

What are polygenic traits?

Back

Polygenic traits are traits that are controlled by two or more genes, leading to a wide range of phenotypes.

Tags

NGSS.HS-LS3-3

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in a heterozygous genotype.