sperm meaning, definition, what is sperm: a cell produced by the sex organs of a m...: Learn more.
The meaning of SPERMISM is a theory formerly widely held in biology: the sperm contains the preformed germ of the embryo.
whaleshaveemotionalintelligence-meaningthey'recapableofempathy,griefandsadness.Still,inproportionto(与…成比例)ourbodysize,thehumanbrainisbiggerthanthatofthespermwhale.Yetthere'sstillsomuchwedon'tknowabouthowsmartspermwhalesreallyare.Andjustlikethewhalersofacenturyago,wehavelikelybeenunderestimatingmarinemammals,...
"Sperm"的近義詞和區別 Q:sperm和 semen 和 cum 的差別在哪裡? A:but cum only has one meaning 查看更多回答 Q:sperm和 semen 的差別在哪裡? A:There is a specific definition and difference in biology, but in general speech they mean exactly the same thing. ...
major advances in molecular biology and genetics have provided the "reasons" for severe infertility (very low or zero sperm counts) in many men whose fertility problems were previously poorly understood. We now know that 20-30% of men with such low (under 10 million/ml) or zero sperm counts...
contraceptive that would be available on-demand, meaning women could go buy it off the shelf,” said senior author Joy Winuthayanon, associate professor and director of WSU’s Center for Reproductive Biology. “It could be used in combination with a condom to lower the failure rate ...
for peripatric speciation if (1) the daughter species possesses a subset of the genetic diversity found in the parental species, indicating that the daughter species was formed from a relatively small population; (2) the parent is paraphyletic with respect to the daughter species, meaning that ...
To enable efficient communication, the meaning of most human utterances is underspecified and derived in part from the conversation that precedes them12. To enable many distinct meanings to be communicated, humans access a large inventory of basic sounds (phonemes) by combining phonetic features like...
An autocorrelation function C(s) is estimated between two points in time with a determined lag (s), meaning that data from the same variable at a given time are correlated with data from the same variable taken at a later time. A periodic behavior is distinguished from a random one ...
Subpopulations could occur as a result of the stage of development of each spermatozoon in the subpopulation. Spermatogenesis might contribute to the production of these subpopulations. Insights from evolutionary biology and recent molecular research are indicative of the diversity among male gametes that ...