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Q. A cross is finished between 2 E. coli strains: Hfr arg+ bio+ leu+ (x) F- arg- bio- leu-. Interuppted mating studies explain that arg+ enteres the recipient last, so arg+ recombinants are selected on a medium containing bio and leu only. The recombinants are tested for the presence of bio+ and leu+. The following numbers of individuals are found for each genotype:
arg+ bio+ leu+ 320arg+ bio+ leu- 8arg+ bio- leu+ 0arg+ bio- leu- 48
What is the gene order? What are map distances in recombination units?
A chemical reaction in which polymers are synthesized from their building blocks is called.
Which of the following CANNOT undergo microevolution?
Sometimes when a person is experiencing a heart attack they feel a sharp pain in their left arm. Their arm is not actually hurt, so explain how the wires get crossed and mind perceives pain in wrong place.
Discuss similarities and differences of homeostatic mechanisms for thermoregulation in ectothermic and endothermic animals.
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Based upon what you have learned related to the cells and complex molecules, do you feel this theory makes sense?
What is the difference between octopuses and mussels regarding their circulatory systems? How does that difference influence the mobility of these animals?
Humans are adapting to the enviroment by creating aids/tools; we are actually on the verge of being able to select desired traits by using genetic engineering, in-vitro fertilization, and other molecular biology tools.
One of the most puzzling questions in biology is how multi-cellularity arose. Explain the conditions under which having a body with more than one cell would have been adaptive.
given = enzyme concentration = 37.09 time to float disc (in seconds) trail one =37.09 trail two=48.19 trail three 37.09 sum = 126.47 mean = 42.15 how do we calculate the rate? how do we draw the reactionrate verses enzymecocentration graph?
Eye color is expressed thrugh two genes A and B. Dark brown eye color, A, is dominant over lighter brown a. Eye pigment, B, is dominant over lack of eye pigment, b.
Suppose we use X-ray crystallography to determine the three dimensional structures of leucine and histidine at pH 8. This technique enables the determination of the positions of all the C, N, and O atoms in these two amino acids, but the hydrogen ..
How do technological optimists view human population trends?
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