a substance prepared form killed or weakened pathogens and introduction into a body produce immunity.
describes a microorganism or a virus that caused disease and is highly infectious
the transfer of genetic material into the form of DNA fragments
A virus that infects the bacteria
the spiral-staircase structure
In a nucleic-acid chain, a substance that consists of sugar
A five-carbon sugar that is a component of DNA nucleotide
The rules stating that cytosine pairs with guanine and adenine pairs with thymine in DNA, and that adenine pairs with uracil in RNA.
Complementary Base Pair
A characteristic of nucleic in which the sequences of base on one strand is paired to the sequence of bases on the other.
The process of making a copy of DNA.
An enzyme that unwinds the DNA double helix during the DNA replication
A Y-shaped point that results when the two strands of a DNA double helix separate so that the DNA molecules can be replicated
An enzyme that catalyzes the formation of the DNA molecules