BIO 1130 Study Guide - Midterm Guide: Hugo De Vries, Assortative Mating, Allele Frequency

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Formulated his laws on the creation of hybrids (laws of heredity) in 1866. His work was only recognized in 1900. Mendel"s work was made with exemplary scientific rigour. The choice of the experimental material was judicious: peas (many varieties available, possibility of cross breeding, fairly cheap, generation time is short, descendants are plentiful. Abundant data and the use of mathematical analysis to verify his hypotheses. Mendel talks about hereditary factors (genes were still unknown at the time) Variation of genetic traits is explained by the different shapes genes can have. Each gene occupies a specific locus on a given chromosome. The dna sequence of the locus can show variants (alleles) For example, the alleles for white flowers and the alleles for purple flowers are situated on one of the peas" chromosome. Organisms inherit two copies of a gene (different or identical), one from the father and the other from the. An individual possesses two alleles for one gene (hereditary factor)