Genetics Basics Quiz

What is a dominant allele?

• A characteristic that an organism can pass on to its offspring

• An organism's genetic makeup

• An allele that is masked when a dominant allele is present

• An allele that is always expressed

What does heterozygous mean?

• A chart that shows all possible combinations of alleles

• An organism that has two different alleles for a trait

• An organism that has two identical alleles for a trait

• A diagram that shows genetic traits in family generations

What is a phenotype?

• The process in which genetic material is passed from parents to offspring

• The different forms of a gene

• An organism's physical appearance, or visible traits

• An organism's genetic makeup, or allele combinations

What is represented by the F1 generation?

• Offspring of the P generation

• Probability of an event occurring

• A characteristic passed through genes

• Parental generation

What does the term 'Punnett Square' refer to?

• A diagram showing genetic traits in several generations

• A characteristic that can be passed on to offspring

• A chart that shows all the possible combinations of alleles from a genetic cross

• The process whereby seeds sprout and begin to grow

what is defined as "a characteristic of an organism"?

• inherited trait

• trait

• heredity

• organism

A ____ is a region of DNA that controls a trait.

• gene

• phenotype

• chromatin

• genotype

an _______ is a specific trait.

• trait

• gene

• allele

• DNA

Each section of DNA that codes for a specific trait is called a _______.

• gene

• DNA

• base pair

The genes involved in a given trait

• genotype

• phenotype

• heterozygous

• homozygous