Table of Contents
Introduction to Genetics
Variation is ubiquitous, all organisms exhibit SOME variation
Types of Variation
Distributions of Values
A Histogram
Mean, Median, Variance, etc.
Types of Distributions
Normal Distribution
Bimodal Distribution
A Skewed Distribution
Attributes or Qualitative Variables: Traits vs. Characters
WHAT IS A GENE AND WHERE ARE THEY LOCATED?
What is an allele?
Example:
WHAT IS THE DIFFERENCE BETWEEN AN ALLELE AND A GENE?
Genes are arranged on linear chromosomes
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How many loci are there?
Some alleles are dominant, some are recessive, and some are codominant with respect to each other
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Example of Codominance: Blood Type
Phenotype vs. Genotype
The effect of every gene depends both upon the environment, and upon other genes
Example: The Bithorax Mutation
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Segregation
Independent Assortment
Number of potential gametes:
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Much of what we know about genes was first discovered by Gregor Mendel
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Mendel’s Laws
A Classic Mendelian Experiment
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Questions:
Answers:
Another Experiment
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