Genetics and punnett squares

Front

What are traits?

Back

Traits are characteristics that make one individual different from another, such as eye color and hair color.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What does the genotype Yy express?

Back

The genotype Yy expresses the dominant trait, which is Yellow.

Tags

NGSS.HS-LS3-1

Front

What is a homozygous allele pair?

Back

A homozygous allele pair consists of two identical alleles, such as BB or bb.

Front

What is a heterozygous dominant allele pair?

Back

A heterozygous dominant allele pair consists of one dominant and one recessive allele, such as Ff.

Front

What is a genotype?

Back

A genotype is the combination of genes a person has, represented by letters.

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.

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-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, while recessive traits are only expressed when two recessive alleles are present.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What does it mean for an allele to be dominant?

Back

An allele is dominant if it masks the effect of a recessive allele when both are present in a genotype.

Front

What does it mean for an allele to be recessive?

Back

An allele is recessive if its effects are masked by a dominant allele in a heterozygous genotype.