Announcements: Make sure you know Darwin and the natural selection, and the survival of the fittest well for the test on Friday.
- finish lab questions on UP page 32
- answer questions 6-7 on UP page 30
Today we took notes from our To Be Or Not To Be note packet and we did a lab.
Notes:
Types of Evolution:
Microevolution- changes that take place within a single species to form variations in a population (small changes)
Genetic drift- changes in a gene pool of a small population due to chance (usually reproduces genetic variability)
2. Macroevolution - changes that have taken place in a species that leads to two or more different species
Lab:
In order to do the lab we first had to know what a half-life was. A half-life is how long it takes for half of something to disappear.
In this lab we started off with 100 M&M's.
- We first had to put the M&M's in a cup and shake the cup for a half-life, which in this case, was 10 seconds.
- Next we had to pour theM&M's onto the plate and spread them out. The ones that showed the m were the ones that were considered to be decaying and the ones that were face down, were fine.
- We would then remove the decay and repeat this process with the remaining M&M's and an increasing half-life time.
*Danielle will be the scriber for tomorrow*
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