Answer:
i didn't understand yiur language
They must occur in the DNA, which is in each cells nucleus. More specifically the nucleolus of the cell. A mutation occurs in an allele, where a base triplet (or a codon) gets transcribed incorrectly.
Animals that use echolocation. Bats, whales, dolphins, a few birds like the nocturnal oilbird and some swiftlets, some shrews and the similar tenrec from Madagascar are all known to echolocate.
Answer:
There is a smaller chance of mutation.
Explanation:
Well a person breathes harder when he/she exercizing because you are working hard and your body is not used to it so your trying to pass more air through the lungs
