In a DNA molecule, if 38% of the molecular bases are C (cytosine), what percent of the bases are T (thymine)?

In a DNA molecule containing 38% of Cytosine(C), The percentage of Thymine(T) is 12%

According to Chargaff's Rule:

Since the proportion of C is 38%, the Guanine will also be 38%

A+T= 100-76

A+T= 24

A=12 and T= 12

Therefore, we can conclude that The percentage of Thymine(T) is 12%

For more about Chargaff'link rule you can refer to the link:

All the information for the genes is stored in the DNA. DNA stands for deoxyribose nucleic acid. The DNA is present at the chromosome as in highly coiled form in the nucleus.

The DNA is made from the following:-

The thymine requires to join with the adenine is 12% because.

DNA has 4 nitrogenous bases, that are adenine, guanine, cytosine, and thymine. The adenine binds to the thymine with the double hydrogen bond in the same ratio and the guanine binds to the cytosine with the triple hydrogen bond.

Hence, according to the Erwin Chargaff rule, the ratio of purine to pyrimidines will be the same. hence the percentage of the "T" will be 12%.

For more information, refer to the link;-

link

a fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] the age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] other commonly used derivatives include kerosene and propane. fossil fuels range from volatile materials with low carbon to hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

the theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the earth's crust over millions of years was first introduced by andreas libavius "in his 1597 alchemia [alchymia]" and later by mikhail lomonosov "as early as 1757 and certainly by 1763".[4] the first use of the term "fossil fuel" was by the german chemist caspar neumann, in english translation in 1759.[5]

in 2017 the world's primary energy sources consisted of petroleum (34%), coal (28%), natural gas (23%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.[6] non-fossil sources in 2006 included nuclear (8.5%), hydroelectric (6.3%), and others (geothermal, solar, tidal, wind, wood, waste) amounting to 0.9%.[7] world energy consumption was growing at about 2.3% per year. in 2015 about 18% of worldwide consumption was from renewable sources.[8]

carbon

explanation: