Unit 3 Review

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 does 'Ff' represent in genetics?

Back

A genotype where one allele is dominant (F) and the other is recessive (f), indicating a heterozygous condition.

Front

What is heredity?

Back

The passing of traits from parents to offspring.

Front

What is a phenotype?

Back

The physical appearance of an organism, resulting from the interaction of its genotype with the environment.

Front

What is a genotype?

Back

The genetic makeup of an organism, represented by the alleles it possesses.

Front

What does it mean if a trait is dominant?

Back

A dominant trait is one that will express itself in the phenotype even if only one copy of the allele is present.

Front

What does it mean if a trait is recessive?

Back

A recessive trait is one that will only express itself in the phenotype if two copies of the allele are present.

Front

How do you determine the probability of a trait in offspring?

Back

By using a Punnett square to calculate the ratio of different genotypes and phenotypes.

Front

What is a pedigree chart?

Back

A diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.