Fish Pond Genetics

In bio class today, we experimented with a fish pond and the Hardy-Weinberg equilibrium.

We started out with a fish pond and then were allowed to change any factor we wanted, related to the fish and see the changes' effects on the color of the fish.
For example, I wanted to make all of the fish red, so I made the RR become the fittest allele, made a red color most likely for fish migrating into the pond, and changed the ratio of mutations from an r allele to an R allele very high.

The pond followed a Hardy- Weinburg equilibrium when all five of these situations were true about the pond:
1) The population size must be big.
2) Mutations must be low.
3) Migration should not occur in or out of the specified area.
4) Mating is random.
5) Genotypes cannot affect a species' fitness.

When I put all of these conditions in the pond, the population and percentage of R/r alleles stayed constant. When I changed one (or all) of these conditions, the graph varied, going up and down.
In the pictures below, the first picture shows a generally constant situation. Is fluctuates, but very slightly. The second picture shows what happens to the allele percentages when the Hardy-Weinburg equilibrium is messed with or when the genes are changed by a greater force (me in this case).

Alternate Geological TImeline

Here is the extra credit alternate geological timeline. I put all the events on a 12-hour clock and saw where they would match up on the clock. 12:00 noon represents today on the clock, and 11:59 PM represents the beginning of time, 4.6 billion years ago. Here are the different eras shown on the clock.

As seen from the picture, the Cenozoic Era (yellow) takes up 10 minutes, the Mesozoic Era (green) takes up 27 minutes, the Paleozoic Era (orange) takes up 45 minutes, and the Precambrian era (blue) takes up the remaining time. It is a huge majority of the Earth's history. I saw that on the original timeline as well, but I never realized how much of a majority it really was. 

For the original timeline, we had to write several events on a paper. Here are three pictures, one telling which events correspond to which letter, one showing the events of the last three eras, and one showing all of the events

.

The first picture lists the events and times. Those times are how long ago they would be on a clock. For example, Mr. Wong's birthday would be 0.000558 seconds ago on the clock. You can see in the second picture that most of the events (11/12) are in the three most recent eras. Only one event, single-celled organisms appearing, happened in the Precambrian era. This shows how slowly major evolution and change occurred, then how fast it ramped up.