Original top strand
atg – ggg – cca – gtt – gaa – aaa – att – gca – gaa – ctt – tga
*

new mrna strand

aug - - - - - - - - - -
*
original top strand
atg – ggg – cca – gtt – gaa – aaa – att – gca – gaa – ctt – tga

new mrna strand

aug - - - - - - - - - -

tac - - - - - - - - - -

new bottom strand

Here are the answers to this:

1. AUG - GGG - CCA- GUU -GAA- AAA - AUU- GCA - GAA - CUU - UGC

2. AUG - GGG - CCA - GUU - GAA - AAA - AUU - GCA - GAA - CUU - UGA

3. TAC - CCC - GGT - GAA - CTT - TTT - TAA - CGT - CTT - GAA - ACT

Here's something to remember:

The top strand is the coding strand, then the bottom serves as the template strand. So this is where the RNA will get the information. So we get the complementary strand first then match the RNA sequence.

DNA to complementary DNA strand

BASE PAIRING:

G ⇒ C ; C⇒G

A ⇒ T ; T⇒A

Complementary DNA to mRNA

BASE PAIRING:

G ⇒ C ; C⇒G

A ⇒ U ; T⇒A

The new Bottom strand

BASE PAIRING:

G ⇒ C ; C⇒G

A ⇒ T ; U⇒A

If you remember the base pairings, you might be able to do it on your own next time :)

ORIGINAL TOP STRAND

ATG - GGG - CCA - GTT - GAA - AAA - ATT - GCA - GAA -CTT- TGA

Get the complementary strand

TAC - CCC - GGT - CAA - CTT -  TTT  - TAA - CGT - CTT -GAA - ACG

Then you get the mRNA strand

AUG - GGG - CCA- GUU -GAA- AAA - AUU- GCA - GAA - CUU - UGC

ORIGINAL TOP STRAND

ATG – GGG – CCA – GTT – GAA – AAA – ATT – GCA – GAA – CTT – TGA  

Get the complementary strand

TAC - CCC - GGT - CAA - CTT - TTT - TAA - CGT - CTT - GAA - ACT

Then get the mRNA strand

AUG - GGG - CCA - GUU - GAA - AAA - AUU - GCA - GAA - CUU - UGA

New bottom strand

TAC - CCC - GGT - GAA - CTT - TTT - TAA - CGT - CTT - GAA - ACT

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