Nigg
Alleles
different versions of a gene
Genotype
genetic makeup of an organism
Mendelian traits
1 gene=1 trait
pleiotropic genes
1 gene=more than one trait
Diploid cells
A cell containing two sets of chromosomes (2n), one set inherited from each parent.(46)
dominance
A characteristic in which an allele that expresses its phenotype even in the presence of a recessive allele
Punnett Square
A chart that shows all the possible combinations of alleles that can result from a genetic cross
Haploid
An organism or cell having only one complete set of chromosomes. (23)
Heterozygous
An organism that has two different alleles for a trait
Homozygous
An organism that has two identical alleles for a trait
Phenotype
An organism's physical appearance, or visible traits.
somatic cells
Any cells in the body other than reproductive cells
Autosomes
Any chromosome that is not a sex chromosome
sex chromosomes
Chromosomes that determine the sex of an individual
sex-linked inheritance
Inheritance of a genetic trait located on the sex chromosomes
Heredity
Passing of traits from parents to offspring
Gametes
sex cells
polygenic traits
traits controlled by two or more genes
Recessive traits
traits that typically do not show in a person unless both genes for the trait are inherited