Genetics

Front

What is a PHENOTYPE?

Back

The physical expression or characteristics of a trait in an organism, such as flower color.

Tags

NGSS.HS-LS3-1

Front

What is a GENOTYPE?

Back

The genetic makeup of an organism, represented by the alleles it possesses, such as Aa, BB, or rr.

Tags

NGSS.HS-LS3-2

Front

What does it mean for alleles to be HETEROZYGOUS?

Back

Having two different alleles for a particular gene, such as Hh.

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-3

Front

What does it mean for alleles to be HOMOZYGOUS?

Back

Having two identical alleles for a particular gene, such as HH or hh.

Front

What is INCOMPLETE DOMINANCE?

Back

A genetic situation in which one allele does not completely dominate another, resulting in a phenotype that is a blend of both alleles.

Front

What is the difference between a dominant and a recessive allele?

Back

A dominant allele expresses its trait even in the presence of a recessive allele, while a recessive allele only expresses its trait when paired with another recessive allele.

Front

What is a Punnett square?

Back

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

Front

What is the expected phenotype ratio in a monohybrid cross?

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The expected phenotype ratio is typically 3:1 for dominant to recessive traits.

Front

What is a trait?

Back

A specific characteristic of an organism, such as height, flower color, or seed shape.

Tags

NGSS.HS-LS3-1

Front

What is a gene?

Back

A segment of DNA that contains the instructions for building a specific protein, which influences a trait.

Tags

NGSS.HS-LS3-2