Answer:
(c) one chromatid each of both homologs.
Explanation:
The S phase is characterized in that the chromosomes are duplicated, in this way a copy is created and this copy is united forming chromatids. In meiosis it is characterized in that the homologs are assembled. According to the exercise, the S phase was incubated using 3H, presumably the chromosomes will have a chromatid to support the 3H residues. Later when the homologs assemble, each of those homologs would have a chromatid to withstand such radioactivity.
Answer:
a. the virus must be able to cross-link red blood cells directly.
Explanation:
Viral hemagglutination assay is a method which is used for the quantification of the relative concentration of the viruses.
The principle on which the hemagglutination assay works is as follows:
- There are sialic acid receptors present on the surface of the red blood cells which will bind to the haemagglutinin glycoprotein present on the surface of the viral particle.
- Due to the binding of the sialic acid receptors with haemagglutinin particle there will be cross-linking of the red blood cells by the viral particles and a lattice formation will take place.
- The lattice will remain suspended in the solution however if the concentration of the virus particles will be less, the lattice will settle down in the well.
Thus, this method allows knowing the relative concentration of the virus.
<em>Due to its basic principle of cross-linking this method works well for only a few viruses such as influenza virus. </em>
The controls of the windshield wiper and windshield washer are usually located on Right lever. Two levers on steering column contain controls for driving. .
A sun visor is located ion the above of windshield also called windscreen . Designed with a flap that is adjustable to help shade the eye of drivers and passengers from the glare of sunlight.
The combination switch they flip beam switch or the directional switch that is on the left hand stalk signals and cancels turn indications when moved up or down.Automotive wipers are controlled by a microprocessor. windshield washer used to keep it clear for rain . snow , dust.
To learn more about the flap here
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Answer:
Threatening rain forest organisms
Explanation:
A more clear understanding of the world around us.
