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Evolution
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PRESENTATION OUTLINE
1.
EVOLUTION
BY: OLIVIA CANTRELL- PERIOD 10
Photo by
Endless Forms Most Beautiful
2.
A TOXIN ADAPTATION
Skunks will spray predators when threatened, predators will remember the distinct black and white pattern and will stay away
Photo by
Brujo+
3.
A MIMICRY ADAPTATION
On left: Viceroy, On right: Monarch
The Viceroy disguises as the bitter tasting Monarch
Found in Mexico and the United States
4.
A CAMOUFLAGE ADAPTION
Uroplatus Gecko- blends in to look like a tree trunk to hide from predators
Found in Madagascar
5.
STABALIZING SELECTION
Birds laying eggs- laying less eggs is unfavorable; that trait declines
Photo by
Powered By Birds
6.
DISRUPTIVE SELECTION
In an evironment of black and white rocks- black and white: survive, grey; eaten by predators
Grey population diminishes
7.
DIRECTIONAL SELECTION
Short and medium-necked giraffes died: could not reach leaves on trees; long-necked prospered: able to reach leaves
Photo by
Scott the Hobo
8.
SEXUAL SELECTION
Big Horn Rams: females are going to pick the males who are the strongest and have the biggest horns
Photo by
James Marvin Phelps
9.
DIVERGENT EVOLUTION
Pentadactyl limb- homologous structure in many like the human arm, fin of whale, and wing of bird
10.
CONVERGENT EVOLUTION
Old World and New World Vultures: Both eat carrion, search for food by soaring and have unfeathered heads, but they are from different families
11.
COEVOLUTION
Flowers compete against each other for pollinators
Photo by
hank_rhoads
Olivia Cantrell
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