Interactive Life Science: 4.2 Quiz Probability and Heredity

The physical appearance of an organism is its

• genotype

• phenotype

• offspring

A number that describes how likely it is that an event will occur is the _________ of the event.

• probability

• possibility

• certainty

An organism that is ____ has two identical alleles for a trait.

• multi-zygous

• heterozygous

• homozygous

A Punnett square shows the combination of_____ that parents can pass on to offspring.

• alleles

• genes

• DNA

The genetic makeup of an organism is its

• genotype

• phenotype

• offspring

An organism that is ______ has two different alleles for a trait.

• dual zygous

• heterozygous

• homozygous

Which of these genotypes is heterozygous?

A.AA B.Bb C.Cd D.ee

• ee

• Cd

• Bb

• AA

Which of these is NOT a phenotype?

• tall

• short

• homozygous

• round

In a cross between individuals that are Aa × Aa, how many boxes of the Punnett square will show an offspring that is AA?

• 1

• 2

• 3

• 4

Which of these is NOT a way to express probability?

• 1 in 4

• 25

• 50 percent

• 3/4