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Male songbirds sing in spring because increasing daylength at this time stimulates testosterone production which spurs growth of song control circuits in the brains of male songbirds. Choose the best level of causation addressed by this explanation. a. Proximate Mechanisms b. Developmental Influences c. Adaptive Functions d. Evolutionary Origins
Briefly explain why hydrogen bonds and salt bridges do not contribute much to protein stability at room temperature.
how The information carried by DNA is incorporated in a code
how would you produce single stranded cloned dna using pGL3 plasmid vector? and How would you mutate a single nucleotide in the dna that has been cloned into the pGL3 plasmid vector.
Uric acid dissociates with a pKa of 5.80 and can be treated as a simple monoprotic acid in pH range. Its solubility in urine depends on relative amount of protonated and unprotonated forms.
A semipermeable membrane separates two aqueous solutions at thirty degrees C. For each of the following cases, name the solution into which a net flow of water.
The graph demonstrate the number of accurate copies of DNA produced by polymerase chain reaction. What can you conclude about cycles 18–26?
The mutated form of hemoglobin in sickle-cell anemia results from the replacement of a glutamate residue by a valine residue at position 6 in the chain of the protein.
Determine the major difference between the cytoskeleton of bacteria and eukaryotic cells and if you were to analyze a DNA sample from a eukaryotic cell.
In a Mendel assignemnt, I was given F2 generation of ear corns yellow plump, yellow shrunken, purple plum, and purple-shrunken with a phenotype ratio of 9:3:3:1.
Explain how a feedback system maintains homeostasis and Design an experiment to test the hypothesis that Drug Y lowers cholesterol in humans. Include all the steps in the scientific method.
Mating between black rats of identical genotype produced offspring as follows: 14 cream colored, 47 black, and nineteen albino.
Imagine looking during a microscope at a squashed onion root tip. The chromosomes of many of cells are plainly visible. In some cells, replicated chromosomes are aligned along center (equator) of the cell. These particular cells are in which stage of..
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