Unit 7&8 Test Review

Front

What is DNA fingerprinting?

Back

A technique used to identify individuals based on their unique DNA patterns; no two people, except identical twins, have exactly the same DNA.

Front

What is genetic engineering?

Back

The direct manipulation of an organism's genes using biotechnology, often used to produce medicines, improved crops, and food animals.

Front

What does homozygous mean?

Back

Having two identical alleles for a specific trait, such as RR or rr.

Front

What does heterozygous mean?

Back

Having two different alleles for a specific trait, such as Rr.

Front

What is a dominant trait?

Back

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

Front

What is a recessive trait?

Back

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

Front

How many alleles do you inherit from each parent for a specific trait?

Back

1 allele from each parent, totaling 2 alleles for each trait.

Front

What is the phenotype?

Back

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

Front

What is the genotype?

Back

The genetic constitution of an individual, represented by the alleles it possesses.

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.