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Question: Assume you had supply of nucleotides made with atoms that were twice as heavy as normal, and you permitted some cells to replicate their dna once, using only the heavy nucleotides. what would be the weight of the double-stranded dna molecules in the resulting g2 cells if replication is semiconservative? why? what would be their weight if replication is conservative? why?
In the telophase stage of mitosis, microtubules gather along the cell's equator. The purpose of these microtubules is to what.
An amateur horse breeder has acquired four new bay-coloured mares (female horses) with uncertain pedigree. What are the probable genotypes of the mares purchased.
In the F2 generation, you find that you have 235 flies displaying the wild type phenotype and 765 flies displaying XYZ phenotype. Which phenotype, Wild type or XYZ, is dominant.
Cut wings is an X chromosome recessive mutant of D melanogaster. Antennaless is an autosomal recessive mutant. A cut, antennaless female is mated to a wild-type male.
A friend has just returned from a trans-Atlantic jet aircraft flight and reported that the plane dropped about1000 m when it entered an "air pocket." Explain to a friend what apparently happened to cause this drop.
A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the probable genotypes of the parents.
A rather tame ltxnsp was recently found on Easter Island through a retired neurophysiologist. He reported the following measurements of ECF and ICF concentrations
What hormone do the adrenal glands produce. An uncold-worked brass specimen of average grain size 0.008 mm has yield strength of 170 MPa. Estimate the yield strength of this alloy (in MPa) after it has been heated to 600°C for 1260 s, if it is known ..
plan the structure again (showing all bonds), and this time indicate the H bonding of dihydroxyacetone to water. Remember which atoms form H bonds -- you've seen this "rule" several times. Also, each (uncharged) oxygen atom participates in 2 H bon..
What happens if intrapleural pressure becomes equal to atmospheric pressure. McCloskey implies that evolution has displaced the need for a designer.
The holoenzyme is denatured by heat at very high temperature. It is found that two polypeptides, although denatured, contains chains that remain together as a unit.
About twice a year, one or two more birds from the neighbouring island arrive. What result do these new arrivals have. There are questions that follow the case study and the first one says to define the bold words from the case study in APA format. I..
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