Answer:
The amount of variation associated with a trait in a population changes because natural selection selects those alleles that are beneficial for the survival of the individual so it increase the frequency of beneficial alleles of a trait and eliminates those allele which reduce the reproductive fitness of an individual.
So the population which have traits that are non-beneficial will be eliminated by natural selection and the population with the beneficial variant trait are selected to live and reproduce to pass their offsprings.
<span>law of superposition law of original lateral continuity
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Answer:
<em><u>The right answer is "D".Transcription uses uracil.</u></em>
Explanation:
The genes carried by the DNA will be encoded in another form: messenger RNA, during a process called "transcription".
The DNA and RNA molecules are chemically very close, but the second has an extra oxygen (in red on the right of the letters) on the sugars (riboses) that make up its nucleotides (the DNA actually contains deoxyribose). In addition, the thymine (T) of DNA is replaced by uracil (U) in RNA.
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