Download - Evo genetic evidence_lt10
“Missing Information”Why is evidence important to a theory?Scientific Evidence:
Experimental Results, Repeatable,
Independently Observable.
Facts - things that verifiably occur in
nature.
The Code Evidence in the chemistry of life
“All living cells use information coded in DNA and RNA to carry information from one generation to the next and to direct protein synthesis. The genetic code is nearly identical in almost all organisms, including
bacteria, yeast, plants, fungi, and animals.”
Identify the differences in the amino acid sequence below. Closer related species will
have fewer differences.
Who’s your closest ancestor?
Count the differences and find out!
*Coelacanth is type of lobed-fined fish - our common ancestor from the sea; Fugu is a type of ray-finned fish - not our closest ancestor from the sea - a type of puffer-fish actually; Mouse is a mammal that eats cheese (you know - like a mouse).
Who is more closely related to the Who is more closely related to the mouse?mouse?
Fugu
Mouse
CoelacanthMouse to Coelacanth = 6 differences
Mouse to Fugu = 8 differences
HONORS extrasNot tested on this...just extra cool
stuff
Article from HEREDITY
2006
“Building Divergent Body Plans with similar
Genetic Pathways”
http://www.readcube.com/articles/10.1038/sj.hdy.6800872
HOXgenes