LIFE 102 Lecture Notes - Quantitative Trait Locus, Dihybrid Cross, Mendelian Inheritance
Document Summary
Mendel derived the law of segregation by following a single character. The f1 offspring produced in this cross were monohybrids, individuals that are heterozygous for one character. A cross between such heterozygotes is called a monohybrid cross. Mendel identified his second law of inheritance by following two characters at the same time. Crossing two true-breeding parents differing in two characters produces dihybrids in the. A dihybrid cross, a cross between f1 dihybrids, can determine whether two characters are transmitted to offspring as a package or independently. Using a dihybrid cross, mendel developed the law of independent assortment. The law of independent assortment states that each pair of alleles segregates independently of the other pairs of alleles during gamete formation. Strictly speaking, this law applies only to genes on different, nonhomologous chromosomes. Genes located near each other on the same chromosome tend to be inherited together. Concept 14. 2: the laws of probability govern mendelian inheritance.