ANT100Y1 Lecture Notes - Lecture 1: Protein Production, Microevolution, Uracil

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Published on 14 Jun 2017
School
Department
Course
ANT100 May 17th,
2017
Principles of Evolution
1. Understand microevolution
-Genetic basis of inheritance and biological evolution
Darwinian evolution & inheritance
-Darwin couldn’t figure out how traits moved from one to another
Does “Lamarckian” Blending work?
-Skipping generations
Gregor Mendel (1822-84)
-He wanted to breed a pea plant
-Didn’t understand what was going on on cellular level
-Smart enough to choose the pea plant
-Able to produce true breeding lines
-Able to produce hybrid
-Obvious physical differences
-Very short generation time (didn’t have to wait long for the result)
-Self-fertilizing
-Produced pure breeding lines (began to experiment with the two different lines)
-Parent generation (P1 generation)
-Only one of traits were seen (yellow seed)
-Wondered where these characteristics went -> Allowed the plants to self-fertilize
-Started seeing a pattern, green seed would pop up (and every other different straits in 3:1
ratio)
Mendel’s Conclusion (Mendel’s law)
-Two factors (for each seed)
-All those factors determined the traits of the plants
-When they were cross bred, one of the other masked the other (not there physically, but it
was somewhere within the plant)
-The world forgot about his laws, but decades later, he had beat everyone in the field of
genetics
Mendelian traits in humans?
-Many don’t go by the Mendelian traits, but some traits such as cheek dimples
-Intelligence don’t or eye color or hair color
-Haven’t been able to replicate Mendel’s data (suspicion against Mendel’s data)
Genetics
-How DNA interact with () to make protein
-Gametes (sex cells, main vehicle in which reproduction occurs)
-Cytoplasm (jelly like)
-Nucleus (blueprint)
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Document Summary

Darwin couldn"t figure out how traits moved from one to another. Didn"t understand what was going on on cellular level. Very short generation time (didn"t have to wait long for the result) Produced pure breeding lines (began to experiment with the two different lines) Only one of traits were seen (yellow seed) Wondered where these characteristics went -> allowed the plants to self-fertilize. Started seeing a pattern, green seed would pop up (and every other different straits in 3:1 ratio) All those factors determined the traits of the plants. When they were cross bred, one of the other masked the other (not there physically, but it was somewhere within the plant) The world forgot about his laws, but decades later, he had beat everyone in the field of genetics. Many don"t go by the mendelian traits, but some traits such as cheek dimples. Intelligence don"t or eye color or hair color.

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