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Vlad [161]
3 years ago
13

Fossil fuels have been used for years as a source of energy. Even though there are many negative issues associated with the use

of fossil fuels, they continue tobeused to a great extent. This is most likely because
Biology
1 answer:
garri49 [273]3 years ago
8 0

Answer:

These fuels are very efficient, it means that fossil fuel sources (oil, natural gas and coal) have high energy conversion rates, thereby they enable to generate important amounts of energy.

Explanation:

It has been shown that the overall efficiency of the conversion of fossil fuels to electricity is approximately 40%, while 60% of the energy produced is wasted during the process of combustion. However, it is important to note that the efficiency of renewable energies (i.e., geothermal, solar, hydroelectricity, wind and biomass) have been considerably increased in the last years.

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Suppose a population is carrying a condition controlled by two alleles: R (dominant) and r (recessive). Only homozygous individu
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<span><u>The answer is A. 72.25 percent.</u>

The Hardy-Weinberg principle can be used:</span>

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where <em>p</em> and <em>q</em> are the frequencies of the alleles, and <em>p²</em>, <em>q²</em> and <em>2pq </em>are the frequencies of the genotypes.

<span>The <em>r</em> allele (<em>q</em>) is found in 15% of the population:
q = 15% = 15/100
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To calculate the <em>R</em> allele frequency (<em>p</em>), the formula p + q = 1 is used:
If p + q = 1, then p = 1 - q
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Knowing the frequency of the <em>R</em> allele (<em>p</em>), it is easy to determine the frequency of the RR genotype (p²):
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Expressed in percentage, p² = 72.25%.</span>

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