Devbio

• Thomas hunt morgan - who thought the control of development lay within the cytoplasm?
• Edmond beecher wilson - himself with Theodor Boveri, one of the biologists who felt that the nucleus contained the

  instructions for development
• Boveri - claimed that each

  chromosome had an individual nature and controlled different vital processes.
• Geneticist - believed that the embryologists were old-fashioned and that development would be completely explained as the result of gene expression
• embryologist - regarded the geneticists as uninformed about how organisms actually developed and felt that genetics was irrelevant to embryological questions.
• melanosomes - are ingested by macrophages that enter the wound site
• metaplasia or transdifferentiation - the transformation of one

  differentiated cell type into another
• totipotent - If each cell's nucleus is identical to the zygote nucleus, then each cell's nucleus
• Cloning - is of interest to some developmental biologists who study the

  relationships between the nucleus and cytoplasm during fertilization or who study aging
• transgenic animals - Animals containing a gene from another individual (often of a different species) a transgene .
• immunoglobulins - The B lymphocyte ("B cell") is able to synthesize proteins ____ that can function as antibodies.
• Electrophoresis - The investigator then places the RNA samples side by side at one end of a gel and runs an electrical current through the gel. The smaller the RNA, the faster it moves through the gel. Thus, different RNAs are separated by their sizes.
• in situ hybridization - A more detailed map of gene expressionpatterns can be obtained
• The polymerase chain reaction (PCR) - is a method of in vitro gene cloning that can generate enormous quantities of a specific DNA fragment from a small amount of starting material