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Human sperm size

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    November 18, A tiny fruit fly has the bizarre distinction of possessing the longest sperm of any animal—20 times the length of its own body and 1, times that of human sperm. Not longer in proportion to its body size , just longer. It is a freakish extreme, but as a general rule, scientists have long known that the smallest animals have the biggest sperm , and vice versa.
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    With animal sperm, size matters

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    Size matters when it comes to sperm dominance

    Try out PMC Labs and tell us what you think. Learn More. Objective measurements are required for computer-aided sperm morphometric analysis CASMA machines to distinguish normal from abnormal sperm heads. For each man a homogeneous population of distributions characterized seminal spermatozoa 7 cells: median values L 4. Different men could have spermatozoa of significantly different dimensions.
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    Sperm: 15 crazy things you should know

    A spermatozoon joins an ovum to form a zygote. A zygote is a single cell, with a complete set of chromosomes , that normally develops into an embryo. Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring excluding, in most cases, mitochondrial DNA.
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    Sperm is the male reproductive cell , or gamete , in anisogamous forms of sexual reproduction forms in which there is a larger, female reproductive cell and a smaller, male one. Animals produce motile sperm with a tail known as a flagellum , which are known as spermatozoa , while some red algae and fungi produce non-motile sperm cells, known as spermatia. Sperm cells form during the process known as spermatogenesis , which in amniotes reptiles and mammals takes place in the seminiferous tubules of the testes.
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