s sa sb sc sd se sf sg sh si sj sk sl sm sn so sp sq sr ss st su sv sw sy

Перевод: spermatozoon

[существительное]
сперматозоид ; семенная нить; живчик

Тезаурус:

1. (Occasional instances are known in which more than one spermatozoon has penetrated an ovum, but its condition is then non-viable.)
2. "In other words, it became technically possible for me, some three years ago, to make certain accurate predictions about a human individual by studying the structure of a newly fertilized female reproductive cell, in conjunction with detailed investigation of the adults who produced the ovum and the spermatozoon that fertilized it."
3. The Ovum and Spermatozoon
4. The immense difficulties lying in the way of an understanding of the mysteries of generation, and the late stage in history when the riddle was solved, is also evident when we consider another commonly used term for the sperm cell, namely "spermatozoon".
5. The last chapter described the fertilisation of the ovum by the spermatozoon and the part played by the chromosomes contained in each.
6. The spermatozoon penetrates the ovum.
7. As we have seen, each cell of the human body save the ovum and spermatozoon normally contains 46 chromosomes.
8. The spermatozoon is much smaller even than the ovum and, although it is a single cell it consists of a head and long tail, which propels the sperm by quivering.
9. The problem, once again, is the dissimilar chromosomes preventing pairing and meiosis, although, as with she-mules, there is some scant evidence of normal pairing and the occasional mature spermatozoon.
10. Ovum and spermatozoon will now fuse together as one cell, the nuclei combining and their chromosomal contents re-arranging themselves in their pairs.
11. Each new cell will also carry the twin set of chromosomes - except the sexual cells (the ovum in the female and the spermatozoon in the male) which will carry only one set - 23 single chromosomes instead of 23 pairs.