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