Patterns of Inheritance

Front

How many alleles does an offspring receive from each parent to determine a specific trait?

Back

One allele from each parent.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What are genes?

Back

Segments of DNA on chromosomes that control a trait or characteristic.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Front

What is the probability of an offspring having brown eyes if B = brown eyes and b = blue eyes?

Back

75%.

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

Front

What do dominant alleles do?

Back

Dominant alleles are alleles whose trait always shows up when the allele is present.

Front

If both parents have blue eyes, which is a recessive trait, what can be said about their baby?

Back

The baby will be blue-eyed.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the definition of a dominant trait?

Back

A trait that is expressed when at least one dominant allele is present.

Tags

NGSS.HS-LS3-1

Front

What is a recessive trait?

Back

A trait that is only expressed when two recessive alleles are present.

Front

What is the genotype of an individual with brown eyes if brown is dominant over blue?

Back

The genotype could be either BB (homozygous dominant) or Bb (heterozygous).

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the phenotype of an individual with the genotype bb?

Back

The phenotype is blue eyes.

Tags

NGSS.HS-LS3-1

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.