Sentences with phrase «hours after fertilization»

A few hours after fertilization, the future sex cells begin to head toward the nascent gonads.

Once the two packets of DNA meld into one complete set of 46 chromosomes, the one - celled embryo begins to cleave, or divide, becoming a two - celled embryo at around 22 to 28 hours after fertilization, four cells another day later, and eight cells around day three.

During the first hours after fertilization, the two separate genomes undergo reprogramming events that presumably function to erase the memory of the differentiated cell type and establish a state of totipotency.

Using a newly developed method researchers at the Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA) have been able to shed light on the complexity of genome reorganization occurring during the first hours after fertilization in the single - cell mammalian embryo.

They found that the organisms — which are about 1 / 100th the diameter of a human hair — build a complete calcium carbonate shell within six hours, about 12 hours after fertilization.

Not exact matches

So researchers at the NIH in 2013 — equipped with the latest tools of science — decided to check this number by instead measuring a pregnancy from the moment of ovulation (fertilization usually occurs within 12 to 24 hours after an egg is released).

Zebra fish learn to recognize kin by scent during a 24 - hour window that begins six days after fertilization.

The timing of pronuclei transfer (better early after fertilization, about 8 hours after insemination, referred to as «ePNT»), changes to the manipulation medium (removing calcium and magnesium, and reducing the amount of the protein that mediates the fusion event), and the use of a one - step medium in which the embryos remained for the duration of the manipulation, all were beneficial.