Genetics/Punnett Square Review

Front

What is a homozygous dominant genotype?

Back

A genotype consisting of two identical dominant alleles, such as BB.

Tags

NGSS.HS-LS1-1

Front

What is a gene?

Back

A section of DNA that codes for a specific trait.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Front

What is the probability of producing heterozygous offspring from a Punnett square cross of Bb x Bb?

Back

50%.

Tags

NGSS.HS-LS3-3

Front

What is a recessive allele?

Back

An allele that is masked when a dominant allele is present.

Front

What is a genotype?

Back

An organism's genetic makeup or allele combinations.

Tags

NGSS.HS-LS3-1

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by its genotype.

Tags

NGSS.HS-LS1-1

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a genetic cross by showing the possible allele combinations.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.

Tags

NGSS.HS-LS3-1