None of these because uracil isn't on the DNA strand thymine is therefore the answer is none of these
<span />
Answer:
c. Increased deadspace
Explanation:
The deadspace never increases naturally it can only increases after surgical removal of organs, example: tonsilar removal. Because the deadspace is the space in the higher respiratory sistem wich includes nose, nasal cavity, larynx, windpipe where air flows on it's way in and out the lungs
The nucleotide triplet that encodes an amino acid<span> is called a </span>codon. Each group ofthree<span> nucleotides encodes one </span>amino acid<span>. Since there are 64 combinations of 4 nucleotides taken </span>three<span> at a time and only 20 </span>amino acids<span>, the code is degenerate (more than one </span>codon<span> per </span>amino acid<span>, in most cases).</span>
The former means those most fit, those with the best set of skills and features for the given environment, will live to pass on the said features in the offspring (with ants, for example, being incredibly fit and adaptable creatures). The latter suggests there is an objective way to measure the "meaningfulness" of each species and having only those most meaningful survive. But this differs from species to species - for a house cat, the great white shark is utterly meaningless.
Also, the meaningful animal has no actual advantage over another to help him survive, whereas fittness is exactly that - it is the ability to survive, ability to pass on your genes.
While I understand it may seem so in the case of domestic animals that the most meaningful to the human are those allowed to reproduce, it is actually the same law: those most adapted for human purpose (which, of course, in the given case means the most meaningful) ARE the fittest here in the human-controlled environment.
