Sentence examples for formation of sperm from inspiring English sources
It also causes formation of sperm granulomas, reduction of sperm fertilizing ability, and destruction of clear cells in the epididymis.
Females would produce eggs with all X's, but formation of sperm cells would be like a dice game, with several ways to make 5 -- like 3X and 2Y, or 4Y and 1X.
It is made of progesterone - a female hormone that inhibits the formation of sperm - and the male hormone testosterone, added to counter the adverse effects of progesterone.
Since the formation of sperm involves millions of cell divisions more than the formation of eggs, the number of opportunities for triplet expansion during DNA replication is much larger in males than in females.
The TGF-β ligand superfamily contains at least 40 members, many of which are produced and act within the mammalian testis to facilitate formation of sperm.
The most likely setting for four-stranded DNA to form, he and his colleagues say, might be the genetic sorting that takes place during the formation of sperm and eggs.
We next scored the effects of lentiviral transducted Rad or Xrcc2 on the formation of sperms in epididymides by PCR as we described previously.
Importantly, ectopic expression of piRNA-resistant forms of target genes in spermatids prevented the formation of sperms, suggesting that proper turnover of certain piRNA targets is essential for normal spermiogenesis.
To determine the functional requirement of regulated expression of Rad1 and Xrcc2 for the formation of sperms in mice, we respectively cloned their cDNAs into a lentiviral vector upstream of the IRES-GFP (Supplementary information, Figure S10A), and used the spermatid-specific protamine 1 promoter (Prm) to drive their expression in spermatids through testis transduction.
Moreover mouse knockout approaches to prove their role in fertilization has been found tedious since the absence of one component during spermatogenesis or sperm epididymal maturation may result in improper formation of specialized sperm membrane surface domains [ 9, 12, 13].
The spd-2 gene is required for polarization of the anteroposterior axis and formation of the sperm asters in the Caenorhabditis elegans zygote.
