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At generation 1, the frequencies of $a^-$ is $p=0.35$ and the frequency of $a^+$ if $q=0.65$. Assuming random mating (and no change in allele frequency) after any number of generation is given by $p^2$ (=0.1225), $2pq$ (=0.455) and $q^2$ (=0.4225).
phenylketonuria is an autosomal recessive disorder.in a population of 1800 people,648 members are suffering with PKU.find out the number of heterozygous individuals in that population.
According to wikipedia: HIV protease inhibitors are peptide-like chemicals that competitively inhibit the action of the virus aspartyl protease. These drugs prevent proteolytic cleavage of HIV Gag and Pol polyproteins that include essential structural and enzymatic components of the virus. This prevents the conversion of HIV particles into their ...
Your answer is correct. HIV-1 encodes a single homodimeric aspartic protease, with each monomer containing the classic Asp-Thr-Gly motif, and the dimer's active site being formed with the two monomeric active sites creating a cleft where the proteolysis takes place. In it, water acts as a nucleophile in conjunction with the aspartic acid residue to hydrolyze ...
Afaik you can describe the potentials between the two sides of the cell membrane using the Nernst-equation. Yepp wikipedia writes the same here. Membrane potential is a very important thing, because human cells require stable internal concentrations of Na+, K+, Ca2+, etc... in order to work properly. These concentration can depend on species, for example ...
Your vocal chords vibrate to produce a tone, but your mouth shapes that tone into the sounds that make up voice. If your vocal chords fail or are removed, the electrolarynx can be used to vibrate the throat for you, but your mouth still needs to shape that sound into words. Because the electrolarynx produces a mechanical buzzing vibration, you get mechanical ...
Evolution is about descent with modification. Spontaneous generation doesn't have that. It's about modern organisms emerging from raw molecules. If flies spontaneously appeared from rotting cow meat, why would they have DNA that made them look like they were evolutionarily related to other insects?
You are right in the sense the evolutionary biology doesn't try to explain the origin of life as it is not within its scope. Other fields of biology investigate the question of origin of life (abiogenesis). Now, there is a very important difference between spontaneous generation and evolution. Life originated at some point and the through repetitive ...
I and II depend on the type of electrical signal applied to the axon. for III, most receptors can perceive other sense as well, so for example striking a vision receptor may produce the perception of light (even in complete darkness) - my guess is the you would feel pain, even if you could isolate the destructive signal away from nearby pain receptors. ...
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