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1. What are dideoxynucleoside triphosphates, and what is their purpose?2. For the three steps of a Polymerase Chain Reaction, indicate the temperature of each step, and what happens during that step.i)ii)iii)3. Alchemase is an enzyme found in some geese that converts lead into gold.This is a restriction map of the goose alchemase gene: The SalI restriction site in the box is polymorphic. Geese with a functional alchemase gene secrete gold into the egg white when they are fed a diet rich in lead. A functional alchemase gene, ALC+ (which is dominant to a mutation that inactivates the gene) has that SalI site. Most geese have a mutation that inactivates the alchemase gene (alc-), and that mutation also eliminates the SalI site. These geese do not lay golden eggs, and will die if fed large amounts of lead. Someone tries to convince you to buy a goose that supposedly lays golden eggs, but before buying it you manage to get a DNA sample from the goose. After digesting the goose's DNA with SalI, you run it on a gel and blot it. You have PCR primers that will amplify the region of DNA identified in the figure. You radioactively label this PCR product and use it as a probe of your Southern blot. What result(s) would you see on the blot in these three cases:a) the goose is an alchemase mutant, and you should not buy it.b) the goose is heterozygous for alchemase, and you should buy it.c) the goose is homozygous for a functional alchemase gene, and you should buy it.
What are the physical changes needed in the body that would require to happen in order for our bodies to live forever. Changes such as telomerase activity, collagen flexibility, environmental changes, role of the immune system, DNA repair enzymes:..
Unexpectedly, a missense mutation found in a protein-coding gene is no longer causing problems for the cell due to the presence of this mutant tRNA. Before the missense mutation in the protein-coding gene, what was the unique encoded amino acid.
The man married with a woman whose sister had galactosemia. The woman is now pregnant with their first child. What is the possibility that this child will have galactosemia.
In mice, the A y allele of agouti mice is ecessive lethal allele, but it is dominant for yellow coat color. What phenotypes and ratios of offspring would you expect from the cross of a mouse
Explain the hierarchy of plant structure using the stem as an example organ and follow it through each stage until you reach the level of cell. Only use the vascular tissue systems.
Describe the function and role in maintaining of homeostasis that each of the following have, Juxtaglomerular apparatus
Assume you remove your test cultures from the incubator and notice that one of them- a know fermenter- has a gas bubble in the Durham tube.
Give one example of humans evolving over the past 10,000 years. Explain why and how evolution is take place?
It is a beautiful hot summer day. You are enjoying a barbeque party and outdoor games at your friend's house. Everyone is having fun.
Describe the differences between an integral membrane protein, a Davison-Danielli peripheral membrane protein, and a protein in which alpha-helices would not be found.
however normal E.coli cells can synthesize all the amino acids, some mutants called amino acid auxotrophs, are unable to synthesize specific amino acids and require the addition of that amino acid to the culture medium for optimal growth.
Barbiturates cause hypoventilation that is the slower-thannormal rate of breathing, since they suppress the respiratory centers in the brain. What happens to the red blood count of a habitual user of barbiturates? Explain in details.
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