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You are studying three populations of birds. Population 1 has ten birds, of which one is brown (a recessive trait) and nine are red. Population 2 has 100 birds. In that population, ten of the birds are brown. Population 3 has 30 birds, and three of them are brown.
a. In which population is the frequency of the allele for brown feathers highest? Explain.
b. In which population would it be least likely that an accident would significantly alter the frequency of the brown allele? Explain.
c. Which population is most likely to be subject to the bottleneck effect. Explain.
Autoimmune haemolytic anaemia is caused in general by auto anti bodies of the IgG and IgM classes. Can antibodies of other classes such as IgA, IgD, IgE cause autoimmune haemolytic anaemia.
p53 is a tumor-suppressor gene that is involved in 50% of all cancers. What is its normal function in cells? A.It activates cell growth B.It activates cell death C.It activates DNA repair D.b and c E.a and b Please explain how you got your answer.
A DNA sequence produces a mutant protein in which several amino acids in the middle of the protein differ from the normal protein. What kind of mutation could have occurred?
Explain how the freshwater and ocean ecosystems interact. Please provide a detailed, complete answer.
A pluripotent cell has been placed into specific culture situations to commit into an early bipotential progenitor of foregut endoderm. Further differentiation could send it to become a hepatocyte or a pancreatic cell.
examine transcription, including such things as the location in the cell, transcription signals, products, chemical details, and/or the amount of chromosome involved.
Early in the morning, the black caterpillars rest in a tightly packed group on the east-facing surface of the tent. In mid afternoon, the group is found on the tent under surface, each caterpillar individually hanging from the tent by just a few of i..
The expression and purification of rGFP started with the increase of the bacterial culture and ended with elution of rGFP off the Ni+2 agarose coloumn.
How is it possible for a change in a single amino acid in a protein of 1000 amino acids to destroy its function, even when that amino acid is far away from any binding site?
Why did your graph of pulse-rate measurements suggest the presence of negative feedback control mechanisms?
If you wanted 10mL of a 1mM nitrophenol solution and you have on hand a 50mM nitrophenol solution, how would you make it. If you wanted 100mL of a 0.1M acetic acid solution, how much 17.4M acetic acid and how much water do you need to add to make t..
Suppose that the cells grow to about 10^5 cells per squre cm and contain about 10pg RNA per cell, determine the theoretical yield of RNA from one of your samples.
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