Punnett Squares and Heredity*

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 from the parents.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-3

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular trait, such as TT or tt.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular trait, such as Tt.

Front

What is a genotype?

Back

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

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Front

What is a phenotype?

Back

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

Front

Who is known as the father of genetics?

Back

Gregor Mendel is known as the father of genetics for his work on inheritance patterns in pea plants.

Tags

NGSS.HS-LS3-2

Front

What is the probability of a curly hair baby if one parent is homozygous dominant and the other has curly hair?

Back

0% chance of a curly hair baby.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Front

What does it mean if an organism is purebred?

Back

A purebred organism has a genotype that is homozygous for a specific trait, meaning it has two identical alleles.

Front

What is the significance of dominant and recessive alleles?

Back

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

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

The expected phenotypic ratio in a monohybrid cross is typically 3:1.