Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of spermatid.

Etymologies

Sorry, no etymologies found.

Examples

  • Containing only the germ of a sperm cell, spermatids are devoid of a tail, meaning they cannot move.

    Getting Pregnant

  • And while spermatids carry only one-half the genetic material of a fully grown sperm, studies show that when combined with an egg which also contains half of the genetic material needed to make a baby in a laboratory procedure, fertilization will result.

    Getting Pregnant

  • As a result, his testicles may be filled with what are called “spermatids” or “round cells”—sperm buds, as you might call them.

    Getting Pregnant

  • Scheme showing analogies in the process of maturation of the ovum and the development of the spermatids (young spermatozoa).

    Illustrations. Fig. 7

  • The spermatids are small polyhedral cells, the nucleus of each of which contains half the usual number of chromosomes.

    XI. Splanchnology. 3c. The Male Genital Organs

  • Most of these cells are in a condition of karyokinetic division, and the cells which result from this division form those of the next layer, the spermatoblasts or spermatids.

    XI. Splanchnology. 3c. The Male Genital Organs

  • Each primary spermatocyte divides into two secondary spermatocytes, and each secondary spermatocyte into two spermatids or young spermatozoa; from this it will be seen that a primary spermatocyte gives rise to four spermatozoa.

    I. Embryology. 3. The Spermatozoön

  • This investigator found that there were 48 chromosomes in the female cell, 47 in the male; after the reduction divisions the unfertilised ova had 24 chromosomes, half the spermatids 24 and half 23, so that sex is determined in man by the spermatozoon.

    Hormones and Heredity

  • Perhaps the most striking of all this series of observations is that lately made by T.H. Morgan, [69] since confirmed by von Baehr, that in a Phylloxeran two kinds of spermatids are formed, respectively with and without an accessory (in this case, _double_) chromosome.

    Evolution in Modern Thought

  • Seminiferous tubules showed disruption of the normal spermatogenic cycle with abnormal acrosomal development on round spermatids, clumping of acrosomes, misaligned spermatids and the absence of normal elongated spermatids in Ehd1 -/- males.

    BioMed Central - Latest articles

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