Vocabulary & Punnett Squares

Front

What is an allele?

Back

An allele is a variant form of a gene that determines a specific trait in an organism.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What does it mean for an allele to be dominant?

Back

A dominant allele is one that expresses its trait even when only one copy is present in the genotype.

Front

What does it mean for an allele to be recessive?

Back

A recessive allele only expresses its trait when two copies are present in the genotype.

Front

What is a genotype?

Back

A 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

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

NGSS.HS-LS4-4

Front

What is a homozygous genotype?

Back

A homozygous genotype has two identical alleles for a specific gene (e.g., TT or tt).

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a specific gene (e.g., Tt).

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Tags

NGSS.HS-LS3-3

Front

How do you represent a dominant allele in genetics?

Back

A dominant allele is typically represented by a capital letter (e.g., T for tall).

Front

How do you represent a recessive allele in genetics?

Back

A recessive allele is typically represented by a lowercase letter (e.g., t for short).