Sentence examples for the first cleavage from inspiring English sources

After the male and female pronuclei have come into contact, the spermatozoal centrioles give rise to the first cleavage spindle, which precedes division of the fertilized egg.

In addition, cell fates become fixed at the first cleavage of the early embryo, so separated cells cannot form twins. Larval (immature) forms, if present, are called trochophores.

The terminal cell divides by a wall formed at right angles to the first cleavage wall and then again by a wall formed at right angles to this; a quadrant of cells is thus formed.

The first cleavage plane observed was meridional and occurred within 30.53 ± 0.20 min after fertilization, whereas the second cleavage plane was also meridional but at right angles to the first cleavage and occurred within 40.68 ± 0.45 min.

The first cleavage has another possible protonation (surface ID) shown in Fig. 4, which we also considered.

The first cleavage of a peptide bond in DKPs was reported for cyclo(Asp-Asp), cyclo(Gly-Asp) and cyclo(Gly-Glu) by trypsin (Matsui 1933).

We initially considered the two largest fractions of the surface cleavages obtained by Ghose et al. The first cleavage (surface I) shown in Fig. 2 has an OH− layer on the surface.

Secondly, we induced both tetraploidy (4N) and gynogenetic diploidy (G2N) by the same hydrostatic pressure shock (PS) conditions (700 kg/cm2, 7 min duration) for the first cleavage inhibition using single-pair mating.

In animals, a complex formed by Drosha and DGCR8/Pasha recognizes the transition between the single-stranded RNA sequences and the stem loop to produce the first cleavage step in miRNA biogenesis [3].

The first cleavage step generates the two subunits p43/p41 and p12 [11].

The first cleavage furrow initiates at the animal pole and progresses vegetally in a roughly meridional plane.