Unit 4 Test Review (Heredity and Genetics)

Front

What is a dominant allele represented by?

Back

A dominant allele is represented by a capital letter.

Front

What are the chances of George and Greta's baby guinea pig having short hair if George is heterozygous for long hair?

Back

There is a 50% chance of having a baby guinea pig with short hair.

Front

What type of allele expression is shown by a calico cat with both orange and black fur?

Back

This is an example of co-dominance.

Front

What is a change in an organism that allows it to survive in its environment called?

Back

This change is called an adaptation.

Front

If a red flowered plant (RR) breeds with a white flowered plant (WW) and the gene for petal color expresses incomplete dominance, what percentage of the offspring will have pink flowers?

Back

100% of the offspring will have pink (RW) flowers.

Front

What is the definition of heredity?

Back

Heredity is the passing of traits from parents to offspring.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits.

Front

What does homozygous mean?

Back

Homozygous means having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous means having two different alleles for a particular gene.

Front

What is the principle of independent assortment?

Back

The principle of independent assortment states that genes for different traits are inherited independently of each other.