A secondary disease or condition that develops in the course of a primary disease or condition and arisis either as a result of it or from independent causes.

An iron-containing protein in red blood cells that reversibly binds oxygen.

The prospect of survival and recovery from a disease as anticipated from the usual course of that disease or indicated by special features of the case.

A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids.

Deformed red blood cells that can lead to numerous symptoms and caused by a genetic mutation in the hemeglobin protein.

Subjective evidence of disease or physical or physical disturbance observed by the patient; for example a headache is a symptom of many diseases.

An inherited characteristic.

A chromosome that is not directly involved in determining sex, as opposed to a sex chromosome.

Any of the usually linear bodies in the cell nucleus that contain a genetic material.

Capable of being transmitted from person to person, animal to animal and animal to human, or human to animal by contact.

A genetic trait is considered dominant if it is expressed in a person who has only one copy of the gene associated with the trait.

A discrete unit of heredity information.

Molecules responsible for heredity and variation of organisms.

The transmission of traits from ancestor to descendant.

A display of the chromosome pairs of a cell aranged by size and shape.

A rare change in the genetic material, ultimatley crerating genetic diversity.

A diagram of a family tree showing the occurance of heritable characters in parents and offspring over multiple generations.

One of the pair of chromosomes responsible for determining the sex of an individual.

A condition that apppears only in individuals who have receieved two copies of a mutant gene, one copy from each parent.