Bio 201 F11 Lect 2 (True) v2r

Bio 201 F11 Lect 2 (True) v2r -...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology in the News [posted in folder on BB] At an es8mated 31,000 genes, the "water flea" Daphnia pulex (a crustacean) has the most genes of any animal sequenced so far humans have ~23000, Drosophila fruit flies have ~ 13000 the process of gene duplica8on appears to have occurred more frequently in the Daphnia lineage than other animal lineages 3 8mes greater than in other invertebrates 30 percent greater than in humans >1/3 of the genes in D. pulex are not similar to genes found in any other genome thus far ‐ func8ons of these are unknown has a well known ecology in the wild and occurs in many rapidly changing and stressful freshwater habitats the need to respond rapidly to environmental changes may account for the large number of genes in Daphnia's genome http://www.nsf.gov/news/news_summ.jsp? cntn_id=118530&WT.mc_id=USNSF_51&WT.mc_ev=click
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
TA office hours • e‐mails are listed on Staf InForma8on in BB • Office hours will be held in LiFe Sciences 026 unless announced otherwise Monday 9:30 ‐ 11:30 – Redwan Monday 2:00 ‐ 3:00 – SaFa Tuesday 10:00 ‐ 12:00 – Harrison Tuesday 4:00 ‐ 5:00 – Alvin Wednesday 2:00 ‐ 3:00 – Dana Thursday 12:00 ‐ 1:00 – Dana ±riday 10:30 ‐ 11:30 – Alvin ±riday 1:00 ‐ 2:00 ‐ SaFa
Background image of page 2
"Nothing in biology makes sense except in the light of evolu8on.” ‐Theodosius Dobzhansky (1973) www.pbs.org/. ../06/ 2/image_pop/l_062_04.html
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Biology before Darwin • Biodiversity and anatomy of organisms studied to understand and glorify Divinity • Species seen as Fxed, unchanging en88es • Biologists classiFed and catalogued organisms extensively – Carl Linnaeus (1707‐177±) • “father of taxonomy”
Background image of page 4
“Species form a ladder-like hierarchy” Aristotle ‐‐‐‐‐‐‐‐‐> Linnaeus 384‐322 B.C. 18th cent.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
But even before Darwin, the “unchanging species” view was beginning to be doubted Jean-Baptiste Lamarck (1744-1829) Put the idea of evolution on the map, well before Darwin
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/23/2011 for the course BIO 201 taught by Professor True during the Spring '08 term at SUNY Stony Brook.

Page1 / 27

Bio 201 F11 Lect 2 (True) v2r -...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online