Answer:
In one way, the existence of a nonsense mutation would lead to the generation of a premature termination codon that will be identified by the RNA polymerase as a termination sequence encouraged by the activity of Rho factor to dissociate ribosome, thus, discharging RNA polymerase and preventing further transcription mechanism making the transcription of the downstream sequence impossible.
For the second way, there is a need to consider that the mechanism is taking place post-transcriptionally. Thus, the effects should be devised after transcription has taken place and the only fate lies in the mechanism encouraged by the RNA dependent RNA-polymerase. However, for this to take place, the event of genetic recombination can also be taken into account leading to the appearance of the faulty gene in the sequence. Apart from this, the open reading frame is required to be co-expressive that would be the most suitable factor, which determines whether the downstream sequences will be transcribed or not post nonsense mutation.
However, the total change relies upon the fact that the mutation is taking place artificially or is induced naturally. One more thing to consider is that there is an existence of another gene known as MCB 354, which is encrypted by another gene and is probably monitored by another promoter sequence. Thus, co-expression would probably be the mechanism in terms of the rho-dependent termination.
Answer:
The Miller and Urey experiment is a well-known classic experiment in which hypothetical conditions of the early Earth's evolution were simulated to test the possibility of chemical evolution. In fact, this was an experimental test of the hypothesis previously expressed by Alexander Oparin and John Haldane that the conditions that existed on primitive Earth promoted chemical reactions that could lead to the synthesis of organic molecules from inorganic ones. It was held in 1953 by Stanley Miller and Harold Urey. The apparatus designed for the experiment included a mixture of gases corresponding to the notion of the composition of the atmosphere of the early Earth in the 1950s, and electric discharges passing through it (simulating lightning strikes on the ground). The Miller and Urey experiment is considered one of the most important experiments in the study of the origin of life on Earth.
There are many different factors, but some are: the amount of natural resources (food, water, etc.), amount of predator/prey, and availability of shelter.
Under normal conditions it is not toxic
Adding ammonium nitrate to water turns the mixture cold and is a good example of an endothermic chemical reaction
Answer:
This is false.
Explanation:
Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements. ... Most stars have small amounts of heavier elements like carbon, nitrogen, oxygen and iron, which were created by stars that existed before them.
