Where is most DNA found in a human cell?
AnswerThe nucleus
Most DNA is packed into chromosomes in the nucleus.
Science · Facts & stats
DNA facts & stats
7 fact-checked facts about dna, genes and genetics, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
How many chromosomes do most human cells have?
Answer46
Humans have 23 pairs, or 46 chromosomes.
Going deeper
Which base pairs with guanine in DNA?
AnswerCytosine
G pairs with C.
Which two scientists published the double helix model in 1953?
AnswerWatson and Crick
James Watson and Francis Crick described the structure in 1953.
In RNA, uracil takes the place of which DNA base?
AnswerThymine
RNA uses uracil where DNA uses thymine.
Expert level
Whose X-ray image, 'Photo 51', was key evidence for the double helix?
AnswerRosalind Franklin
Franklin's X-ray diffraction work revealed the helical structure.
How many nucleotides make up one codon?
AnswerThree
Each codon is a three-letter code for an amino acid or a stop signal.
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