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LenKa [72]
2 years ago
8

Select the description of sensory receptors.

Biology
1 answer:
charle [14.2K]2 years ago
7 0
3....................
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Why are there nucleotides (A, T, G, and C) in the master mix? What are the other components of the master mix, and what are thei
tankabanditka [31]

Answer: Nucleotides are the monomers used for DNA synthesis. The mix also contains a template, DNA taq polymerase, buffer, reverse and foward primer and magnesium ions.

Explanation:

A PCR master mix is a premixed solution that has all of the components for a Polymerase chain reaction (PCR). This reaction is a laboratory technique that amplifies small fragments of DNA into millions of copies.

The master mix used for that contains dNTPs (nucleotides). In the DNA there are four types of nucleotides that are differentiated by the nitrogen base they have: adenine (A), guanine (G), cytosine (C) and thymine (T).

<u>Since nucleotides are the monomers that make DNA, they are found in the mix because they are the material for DNA synthesis.</u>

The reaction mixture also requires;

  • DNA template, the sequence of DNA to be amplified
  • DNA taq polymerase, a heat resistant enzyme that assembles nucleotides into a new DNA
  • Salt buffer, for an optimum ionic environment and pH
  • Oligonucleotide primers (reverse and foward), pieces of DNA complementary to the template. Each hybridizes with one of the DNA chains.
  • Magnesium ions, a catalyst required by DNA polymerase to work
8 0
2 years ago
Fill in the blank
Inga [223]

Answer:

Pollen grains land on the stigma and move down the pollen tube into the ovary.

7 0
3 years ago
Yep answe this plz and thanks
Fofino [41]

Answer is True

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3 years ago
In Mendelian case, the offpspring will take on the pheonotype of the parent that donates the dominant allele True Or False. I'm
timofeeve [1]

Answer:

True

Explanation:

According to Mendelian's law of inheritance, the dominant allele is the allele that is expressed in an individual while the recessive allele are usually not expressed in the phenotype of an individual.

If a parents is dominant for a particular allele of tallness and recessive for a particular allele of shortness it is observed that the dominant allele is what is expressed in the phenotype of the offspring and inherited in simple Mendelian fashion by the offspring.

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Temperature is constant in the bathypelagic zone.<br> A. True<br> B. False
Lilit [14]
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The temperature in the bathypelagic zone, unlike that of the mesopelagic zone, is constant.
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