Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses (e.g., BB, Bb, bb).

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

Front

What is a phenotype?

Back

A phenotype is the physical appearance or observable traits of an organism, determined by its genotype (e.g., brown hair, blond hair).

Tags

NGSS.HS-LS3-1

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Bb).

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., BB or bb).

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the genetic outcomes of a cross between two organisms, showing the possible genotypes of offspring.

Tags

NGSS.HS-LS3-3

Front

What is the probability of offspring inheriting a trait?

Back

The probability of offspring inheriting a trait can be calculated using a Punnett square, showing the likelihood of each genotype.

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present (e.g., A), while recessive traits are expressed only when two recessive alleles are present (e.g., aa).

Front

What is an allele?

Back

An allele is a variant form of a gene that can produce different traits (e.g., A and a are alleles for a gene).

Tags

NGSS.HS-LS3-2

Front

What is the significance of the letter 'B' in genetics?

Back

In genetics, 'B' typically represents a dominant allele, while 'b' represents a recessive allele.

Front

What does it mean if an organism is homozygous recessive?

Back

An organism is homozygous recessive if it has two recessive alleles for a trait (e.g., bb).