Using the equation of the line (y = 0.5x + 79), what would be the melting point of dna with 50% gc content? enter your answer as
a whole number
2 answers:
The melting point for DNA having 50% GC content is 104 °C
Additional explanation
DNA forms a base pair of bonds comprising adenine pairing with thymine and guanine with cytosine. These links are hydrogen bonds.
The presence of three hydrogen bonds between guanine-cytosine and two between adenine-thymine means that heating DNA for denaturation requires a higher energy input.
The proportion of guanine and cytosine in DNA (the GC content) is directly related to the melting point, which is the temperature at which DNA separates.
When we graph the melting point of DNA (y-axis) against the percentage of GC content (x-axis), it produces a linear equation.
Using the line equation (y = 0.5x + 79) with a GC content of 50%, substituting value x gives us the melting point y for DNA:
y = 0.5(50) + 79
Resulting in y = 104 °C
Further reading
the components of the DNA molecule
the structure resembling rungs in the DNA ladder
the components of a nucleotide for DNA and RNA.
the antiparallel structure of DNA strands
Keywords: GC content, DNA structure, melting point, hydrogen bonds, adenine, thymine, guanine, cytosine, denaturation
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Answer:
Yes, sufficient evidence exists to reject the proposal.
Step-by-step explanation:
This requires a single mean test to determine if the average expense of raising a child from birth to age 2 by husband-wife families in the U.S. is $13,960.
The hypotheses are:
H₀: The average expense of raising a child from birth to age 2 by husband-wife families in the U.S. is $13,960, or µ = $13,960.
Hₐ: The average expense of raising a child from birth to age 2 by husband-wife families in the U.S. differs from $13,960, or µ ≠ $13,960.
Provided is the summary of information:
The computed test statistic is:
The test statistic equals -2.24.
We will determine the p-value for this test statistic at a 10% significance level using the following calculations:
Consult the z-table.
The calculated p-value stands at 0.0251 < 0.10, prompting the null hypothesis to be rejected.
Conclusion:
Since the null hypothesis has been rejected at the 10% significance level, it can be concluded that sufficient evidence exists to refute the claim.
The average expense of raising a child from birth to age 2 by husband-wife families in the U.S. does not equal $13,960.