Evidence for Evoluti13

Evidence for Evoluti13 - Evidence for Evolution Sexual...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Evidence for Evolution Sexual selection 2 In this post I present two models of sexual selection and a paper that tests one of the predictions of both models. The first article in the post will be an exposition of the theory and the second article will be a discussion of the paper. Darwin, and others, noticed that in many species males developed prominent secondary sexual characteristics. A few oft cited examples are the peacocks tail, coloring and patterns in male birds in general, voice calls in frogs and flashes in fireflies. Many/most of these traits are a liability from the standpoint of survival, mainly because an ostentatious display to attract females is also going to catch to the eyes/ears/nose/whatever of predators. How then could natural selection favor these traits? Well, as I pointed out in a previous post, the sexual attractiveness of these traits outweighs the liability incurred for survival. A male who lives a short time, but produces many offspring is much more successful than a long lived one that produces few. His genes will
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/14/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

Page1 / 2

Evidence for Evoluti13 - Evidence for Evolution Sexual...

This preview shows document pages 1 - 2. Sign up to view the full document.

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