Genetics and Heredity Review

The passing of traits from parent to child is known as _______________.

• heredity

• gene

• DNA

• RNA

Which of the following diagrams illustrate sexual reproduction?

• I and II

• I and III

• II and III

• III and IV

When a litter of puppies is born, the pups will exhibit certain physical characteristics that can be found in one or both of the parent dogs. These characteristics passed down from parent to offspring are considered to be-

• acquired traits

• recessive traits

• genotypes

• inherited traits

Cystic fibrosis is a genetic disorder in which a particular gene does not make protein the way that it otherwise normally would. Given that cystic fibrosis is a genetic disorder, how would an individual most likely contract this disease?

• A person’s parents would have to carry genetic material for cystic fibrosis within their chromosomes which could then be passed down.

• A person’s parents would have to carry genetic material for cystic fibrosis within their mitochondria which could then be passed down.

• A person would have to have been exposed to environmental influences such as living next to a nuclear power plant.

• Genetic disorders can be inherited in so many ways that it is impossible to tell how a person acquired the disease.

Behaviors that are inherited are referred to as:

• Acquired behaviors

• Instincts

• Learned behaviors

• Personality

The ability to sing is a(n):

• Innate trait

• Inherited trait

• Learned trait

• Reflex

Some inherited traits can be influenced by the environment or choices an individual makes. Which of the options below is NOT an example of that?

• Sunlight causing a person's skin to tan.

• A person eating junk food and gaining weight.

• A sea turtle swimming toward water after birth.

• Dog's fur getting thicker in the winter.

Sections of DNA that code for a protein are called:

• chromatids

• centromeres

• genomes

• genes

This trait is represented by a capital letter and always shows up in an organism when the allele is present

• dominant allele

• codominance

• probability

• recessive allele

Which genotypes are heterozygous?

• EE

• tt

• Rr

• Both EE and tt