A hybrid organism is the offspring of many generations that have the same form of a trait.
Capital letters are used to represent recessive alleles.
Mendel called an individual that has one dominant allele and one recessive allele for a trait a purebred.
Mendel said that the factors that control a trait exist in pairs
Body cells of humans have 46 pairs of chromosomes.
Sex cells have twice the number of chromosomes as body cells.
Genes pass from parents to offspring on chromosomes.
The two chromosomes in a pair have the same genes lined up in the same order.