DNA Base Pairs Calculator
Calculate complementary DNA sequences and analyze base pair compositions with our easy-to-use calculator.
How to Use This Calculator
- Enter your DNA sequence using A, T, G, and C letters
- Click "Calculate" to get the complementary sequence
- View the base pair composition analysis
- Check the GC content percentage
- Review any warnings about invalid nucleotides
Understanding DNA Base Pairs
DNA base pairs are the building blocks of the double helix structure. The four nucleotide bases in DNA are:
- Adenine (A) - pairs with Thymine
- Thymine (T) - pairs with Adenine
- Guanine (G) - pairs with Cytosine
- Cytosine (C) - pairs with Guanine
Base Pairing Rules
The base pairing in DNA follows specific rules:
- A-T pairs form two hydrogen bonds
- G-C pairs form three hydrogen bonds
- Base pairs must be complementary
- The DNA strands run antiparallel (5' to 3' in opposite directions)
Importance of GC Content
The GC content of DNA is an important characteristic that affects its properties:
- Higher stability due to three hydrogen bonds
- Influences melting temperature
- Important for PCR primer design
- Varies between different organisms and genomic regions
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