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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

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

• dual zygous

• heterozygous

• homozygous

The genetic makeup of an organism is its

• genotype

• phenotype

• offspring

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

A chart or tool that shows all the possible combinations of alleles that can result from a genetic cross.

• Punnett Square

• Genetic Calculator

• Family Tree

• Blood Sequence

What allele will always show up when present in the genetic combination?

• Recessive

• Purebred

• Traits

• Dominant

Heterozygous is when the alleles are neither dominant or recessive.

• True

• False

Dominant alleles are represented as lowercase letters on a Punnett Square.

• True

• False