Honors Biology Week 8 Vocabuary Worksheet

The structural and functional divergence of cells as they become specialized during a multicellular organism's development; dependent on the control of gene expression.
The various systems that control and determine which genes are switched on and off, and when, how long, and to what extent the genes are expressed.
A classification system for the antigens of human blood; used in blood transfusion therapy.
An alternative form of a gene.
A chromosome that is not directly involved in determining gender.
An individual who is heterozygous for a recessive gene that predisposes for a hereditary disease.
Phenotypic situation in which both alleles are expressed in the heterozygote.
Visual defect resulting n the inability to distinguish colors and is usually an inherited sex
The reciprocal exchange of genetic material between during prophase I
An inherited condition that affects the cells that produce mucus, sweat and digestive juices; a defective gene causes the secretions to become thick and sticky; the secretions plug up tubes, ducts and passageways, especially in the lungs and pancreas.
Trait that is expressed when its allele is homozygous or heterozygous.
A human genetic disease resulting from having an extra chromosome 21, characterized by mental retardation and heart and respiratory defects
Resulting immediately from a cross of the first set of parents.
The result of a cross between two F1 individuals.
Sexual reproduction. The combination of the egg and sperm.
The genetic information in the chromosomes that determines a trait.
Characteristic of an organism that makes it different from the species.
The study of the patterns of inheritance of specific traits.
The combination of or genes that represent a particular trait. "What genes look like."
Having a single set of chromosomes. Ex. Sperm or egg.