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Bio 207 Week 7 notes

by: Notetaker

Bio 207 Week 7 notes 207/41320

Marketplace > University of St. Thomas > 207/41320 > Bio 207 Week 7 notes
User_39347_profile9613 Notetaker
GPA 4.0
Genetics Ecology Evolution

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- DNA comparison with other species - Mutations - Energy in environments - chromosomal mutations
Genetics Ecology Evolution
Class Notes
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This 2 page Class Notes was uploaded by Notetaker on Wednesday October 21, 2015. The Class Notes belongs to 207/41320 at University of St. Thomas taught by Lewis in Summer 2015. Since its upload, it has received 31 views.


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Date Created: 10/21/15
Biology Week 7 Lecture Notes 0 Very small percent of our genes actually vary fixed alleles vary 0 Whole DNA 12 of genes code for something we don t know about 0 995 similarity between humans 98 chimps 92 rats 80 cows 60 fruit flies 50 bananas 0 change in gamete evolutionarily important 0 in nature the currency is energy 0 bananas evolutionarily make choices 0 Tradeoffs Not unlimited energy Repair get rid of mutation Don t repair ignore Ignore because it takes a lot more energy and it is not worth it too expensive Environments change Survival of fittest fittest things that make copies of themselves Things to Remember 0 Mutations can be lethal loss of function silent gain of function revert to original 0 Mutations can decrease fitness or increase fitness 0 Most are harmful some silent or neutral few mildly good no big leaps Rates of mutation may be a phenotype selectable when environments change Mutations are not directional they are not in response to a needed change but the rate may change quotno hopeful monsters small steps over lots of time evolution does not occur because of a need at the population level mutations can be helpful and allow for adapting to change Every species is extremely fit and adapted to their environment Chromosomal Mutations O CML Chronic Myelogenous Leukemia Normal chromosome 9 and 22 Little bit swaps places Translocation mutation It causes a change in DN that alters cell growth causes Leukemia Gleevec medicine inhibits the enzyme that causes cell proliferation made by a gene activated swap not by killing all rapidly growing cells 90 of the time it works 10 get another mutation that blocks Gleevec


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