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Which of this factor is not responsible for thermal denaturation of DNA?
  • a)
    PH
  • b)
    Temperature
  • c)
    Ionic strength
  • d)
    Humidity
Correct answer is option 'D'. Can you explain this answer?
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Which of this factor is not responsible for thermal denaturation of DN...
When DNA duplex is laid open to the specific conditions like temperature, pH, or ionic strength it will interrupt the hydrogen bond between strands and they are no longer held together. After denaturation, the strand separates as individual coils and the double helix is denatured.
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Directions:Read the passages and choose the best answer to each question.PassageThe Great Lakes—Huron, Ontario, Michigan, Erie, and Superior—form the largest freshwater system in the world.Each of the lakes tends to stratify, or form layers of warmer and colder water, depending on the season. This is called seasonal turnover. In winter, for example, the coldest water in the lake lies just below the surface ice. The water gets progressively warmer at deeper levels. In spring, the sun melts the ice, and the surface water warms. Because the surface water is still cooler than the layers below, the water at the surface sinks to the bottom of the lake, forcing the cooler water at the bottom of the lake to the surface. This mixing, known as spring turnover, eliminates the temperature stratification that was established during the winter.In the absence of this thermal layering, wind continues to mix the water to a greater depth, bringing oxygen (O2) to the bottom of the lake and nutrients to the surface. This results in a relatively even distribution of O2 throughout the lake. When summer arrives, the lake again becomes stratified, with warm water at the surface, and cold water at the bottom. A narrow zone of water undergoing rapid temperature changes separates these layers. This zone is called the thermocline. Cool, fall temperatures cause the lake water to mix again, until the surface begins to freeze and the winter stratification is reestablished.The stability of the lake’s stratification depends on several factors: the lake’s depth, shape, and size, as well as the wind and both the inflow and outflow of lake water. Lakes with a lot of water flowing into and out of them do not develop consistent and lasting thermal stratification.Q. According to Figure 1, the temperature of the water below the thermocline is

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Which of this factor is not responsible for thermal denaturation of DNA?a)PHb)Temperaturec)Ionic strengthd)HumidityCorrect answer is option 'D'. Can you explain this answer?
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