PSYC 2450 Lecture Notes - Lecture 1: Twin, Mendelian Inheritance, Y Chromosome

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2450
• Professor: Karl Hennig

Document Summary

Psyc 2450 hereditary influences on development: describe the difference between the terms genotype and phenotype, and provide a single example that illustrates both concepts. Genotype refers to the inside or essence of an individual, also known as their dna. This is inherited by the individual and influences the phenotype, or the observable characteristics of the person. For example, let"s say an individual is bb for eye color, this is their genotype. B is the dominant allele for brown eyes, hence, the brown color of that individual"s eyes would be the phenotype: identify and describe the two processes that ensure the genetic uniqueness of each human gamete cell. The two processes that ensure genetic uniqueness of each human gamete cell are crossing over and independent assortment. Crossing over occurs following duplication and involves parts of the chromosome moving around to create new combinations of alleles.