Around 40% of cats with white fur and blue eyes are deaf. the gene responsible is pleiotropic. what does this mean? a) the genes for deafness and pigmentation are allelic to each other and are expressed in equal proportion. b) the gene for pigmentation masks the gene for hearing. c) a single gene is responsible for pigmentation and hearing. give me a !

The correct answer is option C) "A single gene is responsible for pigmentation and hearing".

Explanation:

Gene pleiotropy describes a genetic effect at which a single gene causes multiple phenotypic traits. The mechanism of pleiotropy is that a gene codes for a product that is used in multiple cell mechanisms. In this example 40 % of cats with white fur and blue eyes are deaf and the gene responsible is pleiotropic. This means that a single gene is responsible for pigmentation and hearing and the gene codes for a product that causes these two phenotypic traits on cats.

the sun d the answer is sun

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]