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hammer [34]
3 years ago
14

How many sugar phospha te backbones are in one strand of DNA?

Biology
1 answer:
Montano1993 [528]3 years ago
3 0

Answer: Two

Explanation: In double-stranded DNA, the molecular double-helix shape is formed by two linear sugar-phosphate backbones that run opposite each other and twist together in a helical shape. The sugar-phosphate backbone is negatively charged and hydrophilic, which allows the DNA backbone to form bonds with water.

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write the compliment triplets for the DNA sequence in each box in the following “ATG, ATC, GCA, AGT, AGC, GCC, GAT, AAG, TTG, CA
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Answer:

The complementary DNA sequence of each triplet is as follows:

ATG - TAC

ATC - TAG

GCA - CGT

AGT - TCA

AGC - TCG

GCC - CGG

GAT - CTA

AAG - TTC

TTG - AAC

CAG - GTC

TAG - ATC

Explanation:

A double-stranded DNA molecule is made up of two strands of DNA whose sequence are complementary to one another and linked by hydrogen bonds. According to the complementary base pairing rule as postulated by Chargaff, Adenine base will always hydrogen pair with Thymine base while Guanine base will always hydrogen pair with Cytosine base i.e. A-T, G-C

Based on the above explanation, the following triplets of DNA will have the following complementary sequences:

ATG - TAC

ATC - TAG

GCA - CGT

AGT - TCA

AGC - TCG

GCC - CGG

GAT - CTA

AAG - TTC

TTG - AAC

CAG - GTC

TAG - ATC

3 0
3 years ago
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