This is a normal nucleotide sequence on a DNA strand: A---C---T---G---G---A---T
What is an insertion?
a) A---C---T---G---C---G---A---T
b) A---G---T---G---G---A---T
c) A---C---T---G---G---A---U
d) A---C---T---G---A---T

Please help quick!

the answer is b & c i believe : )

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.