Biology 1001A Lecture Notes - Cyclic Adenosine Monophosphate, Allele Frequency, Frequency-Dependent Selection
9 Feb 2013
School
Department
Course
Professor
Document Summary
In f2 > you get some of each but more black than browns. So the black allele is dominant of brown. The dna with the 2 diff alleles (homologues) in the nucleus, allele transcribed and get spliced. transcript leave the nucleus and attract the attention of ribosomes. Ribosomes take transcripts to the er which get translated then packaged into vesicles that go to the golgi and then into new vesicles that send those proteins to cell membrane. Two different receptors on the cell because there is two different allele in the cell. Pigment production results from the production of melanin, Brown is the mixture of red and black. The protein mc1r (membrane receptor) sits in the membrane and makes black melanin if cyclec amp levels are high. In response to hormone, cyclic amp levels fall and red melanin is produced instead. So cells can make either one if just depends on cyclic amp levels.
