PSY BEH 11A Lecture Notes - Lecture 6: Meiosis, Genetic Drift, Nettie Stevens
17 Oct 2016
School
Department
Course
Professor
Document Summary
4/10/15: evolution and the biological roots of behavior. Understanding evolution is crucial and integral to biology. Genetics: genes-control the production of enzymes and proteins that regulate biological processes, chromosomes-found in the nucleus of every cell. Humans have 23 pairs of chromosomes: genome-a catalogue of the exact sequence of genes of a species(there are 70,000 to 80,000 genes in the human genome, genotype-the genetic blueprint of an organism"s potential traits. The basis of the chromosomal theory of heredity. Establishes a core theoretical foundation that has led to an understanding of phenomena such as recombinant dna, mutations, cancer, and genetic analysis. Tested plants and phenotype versus genotype in the coloring of plants and the use of dominant and recessive alleles. Nettie stevens: determined chromosomal sex determination system. 23 chromosomal pair in humans: male have xy, women have xx, mitosis-normal replication of a diploid cell, meiosis-production of reproduction cells (sperm and egg, mother decides colorblindness because father has y chromosome.
