BIO120H1 Lecture Notes - Meiosis, Dna Replication

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11 Dec 2010
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Lecture 3
Evolutionary Significance of Genetic Variation
Review:
Mendelian genetics: Scitable- Gregor Mendel and the principles of inheritance
Inheritance: Scitable- Mitosis, meiosis, and inheritance
Key Concepts/ Terms:
Genotype
Allele
Locus
Recombination
Phenotype
Genetic polymorphism
Heritable variation
Quantitative inheritance
Mutation
Gene-environment interaction
Mendel’s Experiment:
Conclusion from pea experiment:
1)Inheritance determined by discrete particles (genes)
2)Each organism carries two copies (alleles) of each gene
3)Organisms form gametes (sperm/ pollen, eggs/ ovules) containing only one allele
4)Offspring inherit one allele from each parent at random
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