Answer: This is because small populations are more prone to disease, inbreeding may result in gentrified disorders, and captive species may not reproduce in the wild.
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Metalloid, it includes: boron, silicon, germanium, arsenic, antimony, tellurium and polonium
Answer:
Fortunately, cancer prevention usually occurs through the strict regulation of the cell cycle by groups of proteins that interact with each other in a very specific sequence of events. It is these events that determine whether the cell cycle will go forward or remain stalled between stages.
Explanation:
Answer: 3
Explanation:
The polymerase chain reaction, known as PCR, is a technique in molecular biology developed in 1986 by Kary Mullis. Its objective is to obtain a large number of copies of a particular DNA fragment, starting from a minimum; in theory it is sufficient to start from a single copy of that original fragment, or mold.
<u>This technique builds on the natural property of DNA polymerases to replicate DNA strands by using alternating high- and low-temperature cycles to separate newly formed DNA strands from each other after each phase of replication, and then allowing the DNA strands to re-assemble so that they can be duplicated again</u>.
Since the temperatures of the cycle (95°C in the DNA denaturation phases) imply the immediate denaturation of any protein, thermostable DNA polymerases are used, extracted from microorganisms adapted to live at these temperatures, which are restrictive for most living beings. Today, the whole PCR process is automated by an apparatus called a thermal cycler, which allows the reaction tubes to be heated and cooled to control the temperature required for each stage of the reaction.
Once the first cycle is completed, we have 2 copies of the original sample. Because there are 2 strands of DNA and each of one is copied. At the end of the second cycle, there are 4, and at the end of the third cycle 8... If the cycles occur a number "n" of times and assuming that the number of DNA copies doubles in each cycle, we obtain a DNA quantity of 2^n, so the amplification is done in the form of geometric progression.
So, three cycles are needed to increase eight times in quantity, because 2^3= 8.
It is lighter with less mass so it can get grip faster and speed up faster because it doesn't have as much weight pulling it down