Chapter 9- Genes, Chromosomes and patterns of inheritance
Absence of pigment in the skin, hair, and eyes
A segment of DNA that stores genetic information
An organism that has two different alleles for a trait
Chromosomes that have the same sequence of genes and the same structure
An organism that has two identical alleles for a trait.
Cell division that produces reproductive cells in sexually reproducing organisms
A haploid cell such as an egg or sperm. Gametes unite during sexual reproduction to produce a diploid zygote.
Different forms of a gene
Process by which a single parent reproduces by itself.
Any chromosome that is not a sex chromosome
Area where the chromatids of a chromosome are attached
Situation in which both alleles of a gene contribute to the phenotype of the organism
(genetics) an organism or cell having two sets of chromosomes or twice the haploid number
(genetics) an organism or cell having only one complete set of chromosomes
Describes a trait that covers over, or dominates, another form of that trait.
An organism's genetic makeup
An organism's physical appearance, or visible traits.
A diagram that shows the occurrence of a genetic trait in several generations of a family.
Describes an individual who has only one member of a chromosome pair or chromosome segment rather than the usual two; refers in particular to X-linked genes in males who under usual circumstances have only one X chromosome
A display of the chromosome pairs of a cell arranged by size and shape.
A specific place along the length of a chromosome where a given gene is located.
Double stranded DNA repair in which damaged DNA ends are joined together regardless of homology
Any cells in the body other than reproductive cells
(genetics) an exchange of chromosome parts
Referring to a diploid cell that has three copies of a particular chromosome instead of the normal two.
Characteristics that are inherited
Individuals that are homozygous that will always produce the same offspring when crossed together
An allele that is masked when a dominant allele is present