Mindy made a study chart in science class.
types of dna mutations
x
loss of one or more base
pairs
a base replaced with a
different base
ze
one or more base pairs
added to the sequence
which headings best complete the chart?
x: insertion
y substitution
z: deletion
x: substitution
y: insertion
z. deletion
x: deletion
y: substitution
z: insertion

that's what i got you can count the number of atoms

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

12 is it do you think so