What is the electrical charge of an atom that has gained an electron?

a) positive

b) negative

c) zero

d) neutral

What happens when a magniseum ion ia atracked to a chlrene ion

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis

What processes take place before the mature mrna exits the nucleus?