6. The gene for a large single eyeball is coded by the gene sequence TTCGCTGAA. Let’s go through transcription…
DNA Strand- T-T-C-G-C-T-G-A-A
mRNA Strand- _____________________________
7. Now, let’s look at the gene for green body color, which is GGACTCTAG. With your group (or on your own if you are not completing this with us live), determine the complementary mRNA strand…
DNA Strand 2- G-G-A-C-T-C-T-A-G
mRNA Strand 2 _____________________________
Biology isn't my strong suit, can anyone help? I'm after an explanation more than answers..
I's Pretty Simple if you think about it, when it comes to DNA strands it just are its oppsoites, so it would be
T=A
A=T
C=G
G=C
However when itis mRNA strands the A=T Turns into A=U
so if this was a DNA it would look like
A-A-G-C-G-A-C-T-T
but as a mRNA strand it becomes
A-A-G-C-G-A-C-U-U so it changed the A into a U instead of A into T. Do you understand?
It's Pretty Simple if you think about it, when it comes to DNA strands it just are its opposites, so it would be
T=A
A=T
C=G
G=C
However when itis mRNA strands the A=T Turns into A=U
so if this was a DNA it would look like
A-A-G-C-G-A-C-T-T
but as a mRNA strand it becomes
A-A-G-C-G-A-C-U-U so it changed the A into a U instead of A into T. Do you understand?
Sure, I can help you understand the process of transcription and finding the complementary mRNA strand.
Transcription is the first step in protein synthesis, where the genetic information stored in the DNA is copied into a messenger RNA (mRNA) molecule. This process occurs in the nucleus of a cell. Let's go through the transcription process for both DNA strands.
6. The DNA strand T-T-C-G-C-T-G-A-A represents the template strand for transcription. During transcription, the DNA sequence is "read" and complementary nucleotides are added to form the mRNA strand.
To find the complementary mRNA strand, we need to match each DNA nucleotide with its complementary RNA nucleotide according to the base pairing rule:
- Adenine (A) on DNA pairs with Uracil (U) on RNA
- Thymine (T) on DNA pairs with Adenine (A) on RNA
- Guanine (G) on DNA pairs with Cytosine (C) on RNA
- Cytosine (C) on DNA pairs with Guanine (G) on RNA
So, for the DNA strand T-T-C-G-C-T-G-A-A, the complementary mRNA strand would be:
mRNA Strand: A-A-G-C-G-A-C-U-U
7. For the second DNA strand G-G-A-C-T-C-T-A-G, we need to find its complementary mRNA strand. Again, following the base pairing rule:
- Adenine (A) on DNA pairs with Uracil (U) on RNA
- Thymine (T) on DNA pairs with Adenine (A) on RNA
- Guanine (G) on DNA pairs with Cytosine (C) on RNA
- Cytosine (C) on DNA pairs with Guanine (G) on RNA
So, for the DNA strand G-G-A-C-T-C-T-A-G, the complementary mRNA strand would be:
mRNA Strand: C-C-U-G-A-G-A-U-C
Remember, transcription is the process of copying the DNA sequence into mRNA, and the mRNA strand will have complementary bases to the DNA template strand.