Sentences with phrase «egg cell cytoplasm»

When female animals form egg cells inside their ovaries, they deposit messenger RNAs (mRNAs)-- a sort of genetic instruction set — in the egg cell cytoplasm.

This hypothesis underestimates the opposing power of the egg cell cytoplasm to reprogram the genes in the donor - cell nucleus.

Not exact matches

It is far more likely, however, that the egg - cell cytoplasm with its stripping factor will reprogram all the genetic material including the alterations made in the donor nucleus that were intended to prevent the creation of the zygote.

The second biological objection is that «the egg - cell cytoplasm» will «reprogram all the genetic material including the alterations made in the donor nucleus that were intended to prevent the creation of the zygote.»

For instance, the egg - cell cytoplasm strips off all of the many epigenetic factors which differentiate a genetically restricted donor skin cell from a totipotent zygote.

Infertility treatments once considered revolutionary are now commonplace: If a man has a low sperm count, sperm cells can be retrieved from a testicle for direct injection into an egg's cytoplasm.

Doctors take the cytoplasm of a youthful and healthy egg — containing not the dna but the proteins and enzymes for healthy cell growth — and inject it into the problematic egg to boost its quality.

In a healthy egg Oskar initiates the formation of what's known as the germ plasm — a gathering of proteins and RNAs within the cytoplasm, which then goes on to form a new germ cell.

There on the screen was the huge, rotund universe of the female egg cell, its internal jelly, or cytoplasm, smooth and evenly grained, and there, just below the equator, two ghostly yolklike circles around the male and female DNA, mere mirages of genetic material, in close proximity, nearly nuzzling.

The female egg cell is a huge biochemical universe unto itself, with a complex and sophisticated cytoplasm.

When a sperm cell meets an egg cell (the oocyte), it burrows through the thick outer rind surrounding the egg (the zona pellucida), enters the internal cytoplasm of the egg (the ooplasm), and locomotes its male DNA — half of the typical number of chromosomes — to the female half within about three to four hours.

Nucleoli (dark spots indicated by arrowheads, top) disappear in the presence of egg - cell cytoplasm (bottom).

The resulting embryos can grow up to be healthy adults, indicating that something in the egg's cytoplasm must prompt the nucleus to reverse the biochemical events that turned it into a specialized adult cell.

Xi says part of the trick is to suck a minuscule amount of cytoplasm out of egg cells first to make room for the injected bacteria and prevent cells from bursting.