GENETICS -- perhaps most important to learn and be able to handle the terminology
   
Gregor Mendel (1860's) - Principles of Heredity

        Karyotype and genome
        Gene - specific base sequence at specific locus on a chromosomes; codes for a specific trait
        Alleles
- different possible base sequences for a gene (results in different expressions)
        Genotype/Phenotype (and their ratios)
           
Homozygous/Heterozygous

Sources of Genetic Variation
        Chromosome Segregation and Independent Assortment during Meiosis
        Crossing over of chromosomes during meiosis
        Random Fertilization

Genetic CONCEPTS:
   
Dominance/Recessiveness 
   
Intermediate Inheritance: Incomplete dominance and Codominance     
    Multiple alleles for genes
   
Polygenic Traits - additive effects of several genes at different loci on one trait (a continuation of
             the concept of epistasis)
    Environmental influences on phenotype
   
Sex determination and sex linked inheritance
   
     Autosomes and Sex chromosomes (X & Y); Holandric traits (on Y) and X-linked traits
   
     Homogametic/Heterogametic sexes
   
Sex influenced an sex limited traits