Guessanym

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DNA

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Guessanym
DNA

DNA

Depth
2
Use as Polynym Mark Unseen (✓)
Keyword:   double
Context:   The two strands of DNA in a double helix can thus be pulled apart like a zipper, either by a mechanical force or high temperature.
Nodes:
    • helix can thus be pulled apart like a zipper either by a mechanical force
    • high temperature
Full context:   In a DNA double helix, each type of nucleobase on one strand bonds with just one type of nucleobase on the other strand. This is called complementary base pairing. Purines form hydrogen bonds to pyrimidines, with adenine bonding only to thymine in two hydrogen bonds, and cytosine bonding only to guanine in three hydrogen bonds. This arrangement of two nucleotides binding together across the double helix (from six-carbon ring to six-carbon ring) is called a Watson-Crick base pair. DNA with high GC-content is more stable than DNA with low GC-content. A Hoogsteen base pair (hydrogen bonding the 6-carbon ring to the 5-carbon ring) is a rare variation of base-pairing. As hydrogen bonds are not covalent, they can be broken and rejoined relatively easily. The two strands of DNA in a double helix can thus be pulled apart like a zipper, either by a mechanical force or high temperature. As a result of this base pair complementarity, all the information in the double-stranded sequence of a DNA helix is duplicated on each strand, which is vital in DNA replication. This reversible and specific interaction between complementary base pairs is critical for all the functions of DNA in organisms.
Marked as seen, but always open to review
Polynym
Nucleobase

DNA

Source
Hallick
Area
Biology
Mode
part
Depth
4
User
scotty
Polynym
Cell theory

Modern Cell theory

Source
Common
Area
Biology
Mode
part
Depth
3
User
dane
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