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DNA within sperm

DNA within sperm

P624/0153

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Credit

CHRISTIAN DARKIN / SCIENCE PHOTO LIBRARY CHRISTIAN DARKIN / SCIENCE PHOTO LIBRARY

Caption

DNA within sperm. Computer artwork of DNA within the head of a sperm cell (spermatozoon) on a background of spermatozoa. Sperm cells carry one half of the gentic material (DNA) for a new human. The other half is in the female sex cell (ovum, not seen), with which one sperm merges during fertilisation. A molecule of DNA (deoxyribonucleic acid) consists of two helical strands coiled around the same axis. There are four nucleotide bases that hold the two helical strands together in a double helix; adenine (A), cytosine (C), guanine (G) and thymine (T). The sequence of the bases in the molecule forms the genetic code.

Release details

Model release not required. Property release not required.

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