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BSCI 105 Lecture Notes

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Department
Biological Sciences Program
Course
BSCI 105
Professor
All Professors
Semester
Fall

Description
  enomics  s the study of sets of genes within and between species  The genomics approach depends on: • “High­throughput” technology, which yields enormous amounts of data •  ioinformatic , which is the use of computational tools to process a large volume of data • Interdisciplinary research terms Theme: Feedback Mechanisms Regulate Biological Systems Feedback mechanisms allow biological processes to self­regulate Negative feedback means that as more of a product accumulates, the process that creates it allows and  less of the product is produced Positive feedback means that as more of a product accumulates, the process that creates it speeds up and  more of the product is produced The Core Theme: Evolution accounts for the unity and diversity of life  “Nothing in biology makes sense except in the light of evolution”—Theodosius Dobzhansky Evolution unifies biology at different scales of size throughout the history of life on Earth Classifying the Diversity of Life  Approximately 1.8 million species have been identified and named to date, and thousands more are  identified each year  Estimates of the total number of species that actually exist range from 10 million to over 100 million Grouping Species: The Basic Idea  Taxonomy is the branch of biology that names and classifies species into groups of increasing breadth  Domains, followed by kingdoms, are the broadest units of classification The Three Domains of Life  Organisms are divided into three domains   Domain Bacteria and domain Archaea compose the prokaryotes Most prokaryotes are single­celled and microscopic Unity in the Diversity of Life  A striking unity underlies the diversity of life; for example
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