Biology 1002B Lecture Notes - Lecture 16: Repressor, Kinesin, Chloroplast
9 Apr 2013
School
Department
Course
Professor
Document Summary
?likelihood that modern multi-cellular life forms are monophyletic. 50/50 life is not monophyletic for multi-cellularity. ?characteristics of volvocine algae that make them a useful model system for studying the transition to multi-cellularity. Volvos is not monophyletic relative structure/function of chlamydomonas vs. volvox cells. Some cells are larger than others, there is an asymmetric division. The larger cells will become gonidia (reproductive cells) The smaller cells will become somatic cells and wont reproduce. End up with tons of somatic cells with large gonidial cells on outside. Now this organism can respond to light, it is phototrophic. Somatic cells that are not on the outside are going to die. genetic approaches to identifying genes relevant in rise/maintenance of multi-cellularity. Could compare the genome of clammy and volvox. Look in somatic and gonidial cells and see the regulation of genes in those two kinds of tissues types of data or insight revealed by comparative genomic studies in.
