If one side of a DNA molecule reads ATGCCGT, what would the complementary side read?

2 Answers
Mar 8, 2018

Answer:

See Below

Explanation:

I've gotten used to writing DNA from the 5end to the 3 end (5 prime, 3 prime). The other way of saying it is Top Strand and Bottom Strand....you've got written the top strand, and you want the complement, or bottom strand.

5` ATGCCGT 3'
3' t a c ggca 5'

so the complementary strand would read: (5-3)
acggcat

Mar 8, 2018

Answer:

#"TACGGCA"#

Explanation:

We want to find the complementary strand of #"ATGCCGT"#.

Remember that #"A"# is adenine, #"G"# is guanine, #"C"# is cytosine, and #"T"# is thymine.

Adenine always bonds with thymine, and guanine only bonds with cytosine. In #"RNA"# however, uracil #("U")# is substituted for thymine instead.

So, in translation, adenine turns into thymine, and guanine turns into cytosine, and vice-versa.

So, the complementary side would read #"TACGGCA"#.