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EOC Biology. 
A strand of DNA contains the sequence GGC-CAT. What is the complementary strand of mRNA for this sequence? Please help



Answer :

CCG-GUA :) (because its an mRNA strand it can't have the amino acid Thymine or (T) so we replace it with a U.
n00nst00p
GGC-CAT - strand of DNA
 xxx- xxx  - strand of mRNA
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The first, let's see what connect with what:
when we talk about DNA and complementary strand of DNA:
guanine connects to cytosine (and vice versa)
thymine connects to adenine (and vice wersa)

when we talk about DNA and complementary strand of RNA:
guanine connects to cytosine (and vice wersa)
adenine (in DNA) connects to uracil (in RNA)
thymine (in DNA) connects to adenine (in RNA)
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GGC- CAT - strand of DNA
CCG- GUA - complementary strand of mRNA

complementary strand of DNA would be: CCG- GTA
(in complementary strand of RNA: thymine is replaced with uracil)

Greetings, 
n00nst00p :)

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