Chromosomes that are not sex chromosomes.
Threadlike structures within the nucleus that consist of DNA tightly coiled around proteins.
Genetic disorder seen in 10% of males and 1% of females; located on the X chromosome.
Analysis of sections of DNA that have little or no known function but vary widely from one individual to another, in order to identify individuals.
A trait that is expressed whenever its allele is present.
Trisomy 21; a genetic disorder seen in 1 in 800 births.
When an absent of faulty gene is replaced by a normal, working gene.
X-linked genetic disorder related to blood clotting seen in 1 in 10,000 males.
Human genome project
An ongoing effort began in 1990 to analyze the human DNA sequence.
A set of photographs of chromosomes grouped in order in pairs.
47, XXY; Sex chromosome disorder where males have more than one X chromosome.
An error in meiosis in which homologous chromosomes fail to separate.
A chart that shows the relationships within a family.
A trait that is expressed only when an individual is homozygous for the trait.
One of two chomosomes that determine an individual's sex; females have two X chromosomes; males have one X chromosome and one Y chromosome.
Sex linked genes
Genes located on the X or Y chromosome.
45, X; Sex chromosome disorder when a female only inherits one X chromosome.
A dominant form of dwarfism
A recessive trait causing lack of pigment in skin, hair, and eyes
Caused by the deletion of three bases on chromosome 7; causes a thick mucous to form in the lungs and digestive tract
Recessive trait carried on chromosome 12; prevents the body from breaking down phenylalanine
Sickle cell disease
Caused by a point mutation of one base pair on chromosome 11; causes misshapen red blood cells
Normal male karyotype
Normal female karyotype
The X chromosome that is inactivated in females
The year the Human Genome project started
Longest chromosome number
Shortest chromosome number
Chromosome that holds the most sex-linked disorders