M
MiCHELLE *
Guest
mutations happen when _____?
a-nucleotides are added
b-nucleotides are lost
c-a base is changed thus changing one nucleotide into another
d-mutations happen in all the above
e-mutations dont happen in any of the above
chemicals which can cause mutation include all but which?
a-DDT
b-drugs
c-formaldehyde
d-peroxide
e-nitrous acid
ab-mustard gas
ac-none
ad-all
which is not true for the DNA molecule?
a-consists of 2 strands
b-twisted into a double helix
c-resembles a ladder with rungs between 2 uprights
d-composition of uprights and rungs vary from molecule to molecule
e-all the above
ab-none of the above
cytosine always pairs with _______?
a-guanine
b-adenine
c-uracil
d-thymine
e-any of the above
ab-none of the above
a-nucleotides are added
b-nucleotides are lost
c-a base is changed thus changing one nucleotide into another
d-mutations happen in all the above
e-mutations dont happen in any of the above
chemicals which can cause mutation include all but which?
a-DDT
b-drugs
c-formaldehyde
d-peroxide
e-nitrous acid
ab-mustard gas
ac-none
ad-all
which is not true for the DNA molecule?
a-consists of 2 strands
b-twisted into a double helix
c-resembles a ladder with rungs between 2 uprights
d-composition of uprights and rungs vary from molecule to molecule
e-all the above
ab-none of the above
cytosine always pairs with _______?
a-guanine
b-adenine
c-uracil
d-thymine
e-any of the above
ab-none of the above