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Industrial melanism refers to the dark pigmentation that evolved in some insects giving them protective coloration on vegetation darkened by soot in heavily industrialized areas prior to air pollution regulation. In one heavily polluted area near Birmingham, England in 1956, 87% of the moths of the species Biston betularia were black due to the presence of a dominant gene for melanism. Estimate the frequency of the dominant allele in this population, and the proportion of black moths that are heterozygous.
If we have a dsDNA molecule and we require an ssRNA molecule, which of the two DNA strands will have the same sequence as the RNA molecule?
evaluate the melting temperature of the original strand. Because G binds to C more strongly than A binds to T, the melting temperature should increase with the fraction of G/C pairs along the backbone of a sequence.
Which groups of foods are underrepresented or overrepresented in your diet? If you did not consume the recommended number of servings from each group, explain why. Propose how you might consume the recommended number of servings from each group in th..
A dog homozygous for both dominant traits is mated to a droopy-eared silent follower. The expected phenotypic ratio and genotypic ratio in the F-1 generation.
The following cross involving three genes was performed: Aa Bb Cc x aa bb cc, and the phenotypes and number of progeny are shown below. Each pair of alleles exhibits simple dominance and recessiveness.
The bacteria are allowed to grow overnight and are streaked on a plate using the technique that produces isolated colonies that are clones of the original. Samples of these colonies are then grown in four different media: nutrient broth plus ampicill..
In eukaryotic cells, the electrons donated by NADH and FADH2 are transported along electron carriers in the
A short-tailed mutant mouse was discovered. Multiple crosses of this mouse to mice with normal tail length produced 27 long-tailed mice and 25 short-tailed mice.
It had been the warm, wet spring and she complained of a large number of flies in the area. She felt sick last day there after eating some canned food, as there was no cooler there. You had no time for culturing, as you require taking action fast.
The restriction enzyme Scs1 cuts at a restriction site that is found only very rarely in dog genomes. One dog, Jimmy, has two restriction sites for this restriction enzyme in his genome. Another dog, Billy, has three restriction sites for this enz..
Compute the number of RBC if the dilution is 1:50, the cell count is 400 cells counted in five (5) RBC squares of the hemocytometer.
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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