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Define natural selection. Whycan't natural selection be described as a "force" or working "for" something?
You are investigating the scene of a hit and run where somebody's pet dog was killed. It is a very hot day so the dog's body temperature is unlikely to yield any important information regarding the time of death. The dog's limbs are movable and th..
Assume you examine the stability of your favorite protein kinase and find that half of the protein is degraded every 10 minutes.
The pituitary gland secretes thyroid-stimulating hormone (TSH), which stimulates the thyroid gland to secrete the thyroid hormone (TH). TH has a negative feedback influence on TSH.
Would you expect an ectoparasite, such as a bird louse, that lives its entire life on the body of a homeothermic host, to have a broad thermal tolerance and what about the mite that lives on the bodies of rattlesnakes?
Assume that this population is undergoing mutational pressure. The rate of mutation is 1.0 x 10-4 for changing A to a and 1.0 x 10-5 for changing a to A. What is the allele frequency of A after a single generation? (do not round your answer)
a bacteria culture starts with 120 bacteria and after 3 hours the population consist of 200 bacteria. What is the rate of increase to the nearest percent?
The problem refers to the MN and ABO loci mentioned in class. It also refers to Rh locus, which is responsible for the positive/negative part of the blood type.
find examples of countries for each population growth model (rapid, slow, zero). Use examples other than the ones described in the text or the lecture. What evidence can you find to support your choices?
Many bacteria are anaerobic. If bacterium were to produce the same amount of ATP within a minute as a cell extracted from your skeletal muscle, what would that bacterium have to do?
You are examining an algae, and note that the chloroplasts seem to have 3 or 4 membranes. What can you conclude about the origin of this algae, and what are two corroborating pieces of evidence that you could use to confirm your conclusion?
Determine how many molecules of methylene blue dye are in a 256-fold dilution of a 0.00025 percent methylene blue dye stock solution?
suppose pure line lima bean plants having green pods were crossed with pure line plants having yellow pods. If all the F1 plants had green pods, and were allowed to interbreed, 580 F2 plants, 435 with green pods, and 145 with yellow pods would be ..
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