chapter 9 opener when a bull elk bugles other males listen
Download
Skip this Video
Download Presentation
Chapter 9 Opener: When a bull elk bugles, other males listen

Loading in 2 Seconds...

play fullscreen
1 / 16

Chapter 9 Opener: When a bull elk bugles, other males listen - PowerPoint PPT Presentation


  • 281 Views
  • Uploaded on

Chapter 9 Opener: When a bull elk bugles, other males listen. 1. What evolutionary events led to the developemtn of the pseudopenis in the female hyena?. The pseudopenis of the female spotted hyena can be erected. (1) Concentrations of testosterone in male and female spotted hyenas (Part 1).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Chapter 9 Opener: When a bull elk bugles, other males listen' - mike_john


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
1 what evolutionary events led to the developemtn of the pseudopenis in the female hyena
1. What evolutionary events led to the developemtn of the pseudopenis in the female hyena?
  • The pseudopenis of the female spotted hyena can be erected
1 a cost of the pseudopenis for female spotted hyenas
(1) A cost of the pseudopenis for female spotted hyenas
  • Length of the birth canal significantly increased. Size of pup determines survival, therefore evolutionary trade off between pup survival and benefits from testosterone induced aggression and dominance rank, ability to reproduce and dominance of pups.
2 describe possible evolutionary pathways for the developmetn of flight in stoneflies
2. Describe possible evolutionary pathways for the developmetn of flight in stoneflies.
  • Arthropod gills have evolved into many different structures with different functions (Part 1)
2 arthropod gills have evolved into many different structures with different functions part 2
(2) Arthropod gills have evolved into many different structures with different functions (Part 2)
3 discuss the evolution of illegitimate signalers vs honest signalers
3. Discuss the evolution of illegitimate signalers vs honest signalers.
  • .34 Deep croaks deter rivals – honest signal
9 36 convergent threat displays
9.36 Convergent threat displays
  • Honest signal – contest winner gets the female
9 39 a firefly femme fatale
9.39 A firefly femme fatale
  • Illegitimate signal – huge benefits – why did this evolve? Why doesn’t evolution select against this type of behavior?
ad