1. Gene Frequency and Natural Selection
Team Members: Kamilah, Bree and Alex
May 2014

2. Gene Frequency and Natural selection
The basic mechanism of evolution along with mutation, migration and genetic drift.
It’s the process by which species adapt to their environment
Frequency of occurrence of an allele in relation to that of another allele of the same gene in a population

3. Gene Frequency-Methods
Mixed 50 Black and 50 White beads in one cup
Distributed randomly selected pairs into separate cups
Determined both genotype/phenotype and recorded data
We removed beads based on:
33% homologous pairs
100% homologous pairs
We repeated until we got through 6 generations

4. Natural Selection- Methods
Obtain 40 colored hole punches in separate cups:
Green
Orange
Teal
Light green
Pink
Yellow
White
Blue
Purple
Strategically place 20 dots on the 1st
board
Place species to estimate a higher chance of survival
Try to camouflage the dots
Dots were randomly picked by a “predator” from the board and placed in a cup; these
were the species who had not survived
Record the number of death/survival of each species
Environment 1 – Gen. 1-3
purple background
with dark colors
Environment 2 –Gen 4-6
Orange and Black background
Natural disaster in this environment

5. Gene Frequency Results

6. Natural Selection Results

7. Natural Selection results

8. Conclusions
Our data shows that in order to survive you must have genes that can adapt to environments
Natural selection, genetic drift and gene flow are the mechanisms that cause changes in gene frequencies over time
In natural selection it occurs when individuals with certain genotypes and move likely than individuals with other genotypes to survive and reproduce and to then pass on their alleles