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Montano1993 [528]
3 years ago
15

Which of the following places the steps in the PCR procedure in the correct order?

Biology
1 answer:
Marta_Voda [28]3 years ago
5 0

Answer:

Polymerase chain reaction (PCR) test is used to duplicate traces of DNA from any living form, for identification purposes.  The correct sequence is 1, 3, 2; based on the options given.

Explanation:

The steps to be followed for the PCR procedure are:

<em>Denaturation</em>

Option 1.  Involves incubation at 94°C to denature DNA strands into single strands by breaking of weak hydrogen links

<em>Annealing</em>

Option 3.  Temperature is lowered to 60°C to allow primers joining their similar DNA sequences.

<em>Elongation</em>

Option 2.  Incubate at 72°C to promote the extension of the DNA strands, actually extending them.

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After the rain of 12th June 2017, an ecologist measured a volume of 1414cm³ of rain water from 0 rain gauge with a funnel diamet
katrin2010 [14]
Rainfall is measured as depth on the surface of the Earth, typically in mm. We know the volume of water in the rain gauge: 1414 cubic centimetres. We know need to know the area of the Earth that this volume fell on. This would be the area of the funnel opening that points up to the sky to catch the rain. We know the diameter is 24 cm. So we need to determine the area of a circle with a diameter of 24 cm. The equation to use is: area = pi * radius^2. Since the radius of a circle is half the diameter, the equation is:

So area is <span>3.14159 * 12^2

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5 0
3 years ago
The rate at which chemical reactions occur in the body is known as
dedylja [7]
BMR or Basal Metabolic Rate
5 0
4 years ago
Purple flowers are dominant to pink. Two heterozygotes are crossed.
Pachacha [2.7K]

Answer:

PP ; Pp        (note:- "P" purple, "p" pink)

Pp ; pp

Explanation:

75% purple offspring

25% pink offspring

I hope it helps.

5 0
2 years ago
According to the Punnett square, offspring from these two parents have a ____________ chance of inheriting two b alleles. Indivi
aliina [53]

Explanation:

50%; homozygous recessive; phenotype

According to the Punnett square, offspring from these two parents have a <u>50%</u>chance of inheriting two b alleles. Individuals that inherit two b alleles are <u>homozygous recessive </u>. Inheriting two b alleles confers the <u>phenotype</u> of blue eyes.

Inheritance describes the way in which certain traits are passed onto offspring of sexual reproduction. For instance, co-dominance, both of a gene's alleles are present, and notable in the phenotype.

The nucleus is a large membrane-bound organelle that houses the genetic information, DNA, in the cell. Sequences of DNA make up genes which can have different forms called alleles and comprise the genotype. DNA is transcribed into mRNA and later translated into amino acids which are linked together by rRNA to form proteins. These proteins, when expressed, are referred to as an organism's phenotype.

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA brainly.com/question/2416343?source=aid8411316

Learn more about proteins and carbohydrates at brainly.com/question/10744528

#LearnWithBrainly

3 0
3 years ago
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