Synthesis of nucleoprotein in bean root cells.
acid synthesis in bean root cells ..
Carl Peter Henrik Dam (DK) discovered while working with chickens on synthetic diets. It seemed to be necessary for normal blood clotting so he named it , for koagulation (the German spelling). Dam, Fritz Schönheyder (DK), and Erik Tage-Hansen (DK) discovered that the blood of chickens became depleted of when they were placed on a vitamin K deficient diet (, , ).
Synthesis of nucleoprotein in bean root cells; ..
John Burdon Sanderson Haldane (GB-IN), in 1928, wrote the essay, , which Jane Jacobs and others have since referred to as . This is that sheer size very often defines what bodily equipment an animal must have: “Insects, being so small, do not have oxygen-carrying bloodstreams. What little oxygen their cells require can be absorbed by simple diffusion of air through their bodies. But being larger means an animal must take on complicated oxygen pumping and distributing systems to reach all the cells” ().
THE DNA CONTENT OF THE CELLS OF THE QUIESCENT CENTRE AND ROOT CAP ..
One of two strategies used: activating group attached to the growingchain is released and replaced by the incoming unit (as in protein synthesis),or an activating group in the incoming unit is released (as in DNA and RNAsynthesis).] What advantages does a strategy based on these rulesprovide?
INCORPORATION OF TRITIUM-LABELED THYMIDINE …
“The characters of the individual are referable to paired elements (genes) in the germinal matter that are held together in a definite number of linkage groups…. The members of each pair of genes separate when germ cells mature…. Each germ-cell comes to contain only one set…. These principles…enable us to handle problems of genetics in a strictly numerical basis, and allow us to predict…what will occur…. In these respects the theory [of the gene] fulfills the requirements of a scientific theory in the fullest sense.… It is difficult to resist the fascinating assumption that the gene is constant because it represents an organic chemical entity. This is the simplest assumption that one can make at present, and since this view is consistent with all that is known about the stability of the gene it seems, at least, a good working hypothesis.” Thomas Hunt Morgan ().