Biology/in the double helix shape...
Advertisement
Question
in the double helix shape of dna, what series of nucleotides would match the nucleotide G-A-C-T?
Hi, Lindsay! In DNA, only a G can pair with a C and only an A can pair with a T. So, the DNA that will bind to GACT would be CTGA. However, the normal convention in writing DNA sequences is from the 5' to the 3' direction. Since DNA is anti-parallel - that is one strand goes from 5'-3' while the opposite, complementary strand goes 3'-5'. So, the correct way of writing the matching strand would be AGTC (5'-3').
Related Articles
Answers by Expert:
Joy Ramos
Expertise
PhD student in Biological Sciences at Northwestern U. I can answer questions related to cell and molecular biology, especially those about the basic processes or techniques involved in the life of a cell. I can also answer questions about insulin receptors, since that is my area of expertise. I have a great interest in how scientific discoveries impact society so feel free to ask me about current "hot" science topics in the news and I will try to researcha and share with you the most relevant facts.
Experience
I am a graduating PhD student in Biological Sciences with experience in relaying science to people with non-science backgrounds.
Organizations
AAAS, AWIS, AAUW
Education/Credentials
PhD in Biological Sciences from Northwestern University - expected in Dec. 2006
B.S. in Molecular Biology and Biotechnology from University of the Philippines (magna cum laude)
Awards and Honors
American Association of University Women (AAUW) - International Fellow
AT&T Outstanding Student Leadership awardee for Asia
Most Oustanding Student in Science & Technology Cluster, University of the Philippines
©2012 About.com, a part of The New York Times Company. All rights reserved.