The <em>S. salivarius</em> is chosen because it the predominant gram positive bacteria that colonizes the oral cavity shortly after birth.
<h3>What is PCR?</h3>
Polymerase chain reaction(PCR) test is a type of test that is used to identify a particular deoxyribonucleic acid of an organism.
<em>Streptococcus salivarius</em> cannot be cultured especially when the test sample is contaminated with other body normal flora.
The steps of PCR testing include the following:
- Annealing Primer to Target Sequence
- End of the First PCR Cycle
On a crime scene, the specimen that can be used for PCR testing are blood and body secretions.
PCR testing can be done on a scene with blood spills.
Learn more about gel electrophoresis here:
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Answer:
S phase
Explanation:
The S is short for synthesis, which means that DNA is being replicated. This is one of the stages of interphase, when the cell is growing and getting ready to divide. Well, this is the getting ready to divide part of interphase; the cell needs to duplicate its DNA so it has enough to divide out to daughter cells.
1) Speed = distance / time
s = 60 / 2
s = 30 km/h
In short, Your Answer would be Option B
2) Speed = distance / time
s = 25/4
s = 6.25 km/h
In short, Your Answer would be Option B
[ Direction not needed as it is speed not velocity ]
Hope this helps!
Answer:
True
Explanation:
Ans;true
The neural plate is one of the features exclusive to the embryonic development of chordates. It is located dorsally to the notochord. The neural plate is the rudimentary nervous system of the embryo. During early development ,the neural plate is formed from the ectodermal layer . It undergoes changes in the position and arrangement of it's cells to form the brain and the spinal cord which comprises the central nervous system. It forms tissues and eventually organs by the deepening of the groove which forms ridges which eventually folds and fuses to form the neural tube . The tube differentiates into the prosencephalon, the mesencephalon and the rhombencephalon, from which the organs are formed
