Tuesday, October 15, 2013

Honors Bio Blog 12/69 (Evidence for Evolution Quiz)

Evolution Quiz Day

Today proved to be an extremely stressful day in Biology because I very stupidly left the binder containing my Brine Shrimp data at my house and was thus not able to present it in class...

After doing a brief review of the Brine Shrimp Lab, we proceeded to further discuss concepts about evolution and then prepared to take a very long quiz in a very short amount of time...

The quiz both covered some topics that we had previously discussed and introduced us to some new ones. All of the concepts covered on the quiz will be explained below...

Natural Selection- Natural selection occurs among organisms when some are more fit to survive than others. The organisms that survive are able to reproduce and thus pass their genes to the next generation; however, the weak species that die out our unable to do so and will naturally die off.

Survival of the Fittest- Survival of the fittest is a concept that goes hand in hand with natural selection. Essentially, the fittest organisms with traits that allow them to survive will live and reproduce, while those with undesirable traits will ultimately fail to reproduce and die off.

Fittest Organisms- The fittest organisms are the ones that are capable of reproducing and spreading their genes to the next generation. It doesn't really matter how long they live, the sole determinant factor of being demed the fittest organism is the amount of offspring that the organism is able to produce. The more offspring an organism produces, the higher chance that it has of spreading its genes and progressing the survival of its species.

Inheritable Traits vs. Non-Inheritable Traits- Traits that allow organisms to survive and reproduce are passed down from generation to generation. These traits could range from anything like fur color, shell composition, ear size, etc. and are passed down from the parents to their offspring. These inheritable traits are not to be confused with accidents that can befall organisms like broken legs, ruptured spleens, or sprained ankles. The consequences that these accidents have on organisms may shorten their lifespan and limit their ability to reproduce; however, they are not inheritable traits and will not be passed down to the next generation.


That is all for my blog today...
Please enjoy this very accurate depiction of evolution...



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