Different variations or forms of a gene. Occupies a given locus position on a chromosome.

The genetic material that carries information about an organism and is passed from parent to offspring.

Two different alleles.

A chart or family tree that tracks which members of a family have a particular trait.

Factors that control a trait.

Predict the results of a particular event. A number that describes how likely it is that an event will occur.

An organism that is the offspring of many generations that have the same trait.

An organism's phenotype is
its physical appearance, or visible traits.

Trait always shows up in the organism when the allele is present

Passed from parent to child on a sex chromosome. Eg. red-green colorblindness.

Three or more forms of a gene that code for a single trait.

Picture of all the chromosomes in a cell.

Neither dominant or recessive, both alleles are expressed in the offspring.

XY or XX. They carry genes that determine whether a person is male or female.

A person who has one recessive allele for a trait and one dominant allele.

Different forms of characteristics physical, behaviour, predisposition to a medical condition.

Genetic makeup or allele combination eg. Tt, Hh

Hidden whenever the dominant allele is present.

Two alleles the same