Evolution #1
Change in traits over time
What is Evolution
A phenotype that is NOT able to survive under selective pressure.
What is negative selection?
It protects our DNA from UV damage.
What is melanin?
Has the most intense UV exposure on Earth.
What is the Equator?
Melanocytes and keratinocytes
What are skin cells?
The flow of traits from one population to another.
What is gene flow?
The sun's UV light destroys this vitamin.
What is Vitamin B (folate)?
Another name for natural selection
What is survival of the fittest
Evolution due to random chance
What is genetic drift
Process by which organisms with advantageous traits tend to survive
What is Natural selection
A evolutionary tree (diagram)
What is a cladogram/phylogenetic tree?
There two branches separate on a phylogenetic tree
What is a NODE?
Bringing in new alleles from another population
What is gene flow
An example is geographical isolation - Darwins' Finches
What is Allopatric
reproductive success of an individual
What is fitness?
a trait that helps an organism survive
What is adaptation?
To separate and go different directions
What is diverge? (divergence)
We need sunlight to synthesize this vitamin.
What is Vitamin D?