BIOL 202 Lecture Notes - Lecture 2: Chloroplast Dna, Prophase, Semicolon
Document Summary
Lectures 1 & 2 (chapters 1*, 2, 3) Overview of genetics past and present. Mendel"s law of independent assortment (2nd law) Even though two daughter cells will get the same amount of dna (identical), the cytoplasmic contents can be different. Variegated plants have a mutation in the genes that are involved in making chlorophyll: cells in the white branches will be unable to make any. A single ascus arises from a single cell. Neurospora normally lives as monoploid therefore they have one copy of every chromo. Cells are always oriented so that separation takes place vertically. Each little spore can be separated from the collection and grown. It is very easy to follow where products came from independently as their own monoploid. Process: mating diploid first meiotic division second meiotic division post-meiotic mitotic division development of sexual spores (ascospores) around the nuclei. Allele a encodes a nuclear localised egfp and allele a does not (we can see the segregation above)
