November 15 Lecture Notes

November 15 Lecture Notes - Bio Class Notes for November...

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Bio Class Notes for November 15, 2006 Schedule for Next week: First of all, no lab!! Monday is Monday- Tuesday is Thursday And Wednesday is Friday Final Exam Locations are posted in Doolittle. Lecture Notes: Meiosis George Mendal a genetic scientist- Mendel was raised on a farm. His parents were peasants and he was very observant. He was educated, did well and wanted to get high level of education, but he had to work and pay for school so studied like that. Then he went to the monastery so that, as a monk, he could get money for school and then also study what he liked. He had to work, so then he went to get a job, but instead of getting a job, one of the physicists there decided to give him a chance at doing research with other physicist at a university. So, he continued studying and then he came in contact with biologists who were studying biology in new ways and then he finished his studies at the university and took the exam but decided not to go and be a high school teacher. Then he went back to the monastery and started doing research in plant breeding. This was not a new idea, there were plant and animal breeders, but he just decided to do this. It was generally agreed that hybrid plants (plants from same parents) look alike. They also accepted that Hybrids’ off-spring had some kind of change in them. They didn’t not see that there was a predictable thing there. Mendel saw that there was regularity in the traits of the hybrids. He was the first to measure and analyze this kind of thing… he used what he learned at the university of Quantitative measurements to study the plants. He decided to the pea plants. (You have to remember that if you pick the wrong organism than a lot of times it would be just a waste of time). This pea plant was a perfect choice, because it had many useful characteristics for Mendel’s research. If you don’t have variation, than you can’t study the inheritance of something: There needs to be a kind of variation (this was already there when he bought the seeds), In pea plants, it is very easy to control the pollination. The thing that he would do is cut the anthers before they actually started to grow and then he would come with pollen from another kind of pea plant. He did seven types of studies. Like tall vs. short, color, see colors, etc.
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This note was uploaded on 04/04/2008 for the course BIO 101 taught by Professor Martin during the Fall '08 term at Rutgers.

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November 15 Lecture Notes - Bio Class Notes for November...

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