BSC 101 Study Guide - Final Guide: Mendelian Inheritance, Molecular Cloning, Keystone Species
Document Summary
Contrast blending and mendelian models of inheritance. Blending: offspring receives a blend of traits from parents (red and white make pink) Discrete (mendelian): traits are passed on independently - there is no blend - but not all genes are expressed. Conduct a monohybrid cross to determine probabilities of genotypic and phenotypic frequencies. Law of segregation: the two alleles for any given gene (or trait) are inherited, one from each parent; during gamete production, only one of the two alleles will be present in each ovum or sperm. Law of independent assortment: the inheritance of one trait does not affect the inheritance of other traits. Identify and distinguish the exceptions to mendelian inheritance. Incomplete dominance: neither allele is 100% dominant, so the phenotype is an actual mix/blend. Codominance: more than 2 alleles are dominant together, so they are both expressed equally (ex: ab blood type)