Bio 201 S14 Class 4 2 3 14 v2(2)

Slide 13 13 adap4ve trait loss and trait gain work by

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: erred any fitness advantage. SLIDE 8 SLIDE 9 10. No trait is inherently fit •  The fitness of a trait is also dependent on how fit it is rela4ve to other traits in the popula4on. –  Traits considered fit are those that are fit enough to allow rela%vely high survival and SLIDE 10 reproduc4on. Rela4ve fitness: 1 0.35 Assume = fiaest possible phenotype SLIDE 11 11. Popula4ons evolve and adapt, individuals do not •  An individual’s genes do not change across their en4re body during their life4me. Because their genes cannot evolve, they cannot adapt. •  Evolu4on refers to a change in allele frequencies from one genera4on to the next. –  An individual does not have a frequency or genera4ons. SLIDE 12 12. New muta4ons and traits do not appear because they are needed •  All traits originate as the result of random muta4ons – muta%ons are random •  Organisms have traits because they inherit them from their pa...
View Full Document

This document was uploaded on 04/03/2014 for the course BIO 201 at SUNY Stony Brook.

Ask a homework question - tutors are online