Answer:
The correct answer is - a. DNA primers, and d. DNA polymerase that is heat stable.
Explanation:
In Polymerase chain reaction (PCR) there are many components are required in a overall process but there is two major components that are required for amplification of a specific section of DNA:
a. DNA primers- these are short and strands or sequence of ssDNA, a pair of these sequence acts as the starting site for a new strand which is used to hybridize with the sample DNA and mark the region of the DNA of interest to be amplified.
d. DNA polymerase that is heat stable- PCR technique involves various reaction that are performed at different temperatures. A thermophilic bacteria Thermus aquaticus is used to get this heat stable enzyme, Which lives in hot springs.
Thus, the correct answer is - a. DNA primers, and d. DNA polymerase that is heat stable.
True. The crust of the Earth has some permanent magnetization, and the Earth's core generates its own magnetic field, sustaining the main part of the field we measure at the surface. So we could say that the Earth is, therefore, a "magnet."
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❖ The term that matches this statement is Metaphase. Metaphase occurs in Mitosis and Meiosis. The homologous chromosomes line up in single file.
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