MRNA and DNA...! HELP!?

Question

An mRNA base sequence reads AUGCCAAAAAUUGCGACUUAG. From what DNA base sequence was this mRNA transcribed?

this is what i got, i have no idea if its right. can you help me?

AUG CCA AAA AUU GCG ACU UAG.

Answer 1

Ok, what happens when it is transcribed is it is matched, so the finished product is the opposite purine/pyrimidine then what it was transcribed from.

This means that A will turn into U

This means that T will turn into A

This means that G will turn into C

This means that C will turn into G

This means that the mRNA with the code:

AUG CCA AAA AUU GCG ACU UAG

Comes from a DNA base sequence with:

TAC GGT TTT TAA CGC TGA ATC

Hope this helps, have fun with biology!

Good luck,

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