Sentences with phrase «egg cell becomes»

Once fertilised, the egg cell becomes the embryo while the central cell becomes the endosperm that nourishes the embryo.

Not exact matches

If we say such cells have the potential of becoming human life, then Catholics are right to argue that the unjoined sperm and egg also have a similar potential for life, and anything that stops them joining (such as a condom or withdrawal) is morally equivalent to abortion.

Fishel's team filmed 88 newly fertilised eggs from 69 couples in their incubator until they become blastocysts — the small ball of cells that is implanted into the womb.

Those cells, the ones that become sperm or eggs, could beget the tiny embryos» future offspring.

These egg - generating cells are germline stem cells — precursors that become either eggs or sperm depending on whether they end up in ovaries or testes.

While male germline stem cells differentiate (or become specialized) throughout a man's life to produce a steady supply of new sperm, a woman's are believed to differentiate into a stockpile of eggs during a relatively narrow time frame before she's even born.

Isolating those germline stem cells and coaxing them to become eggs has proven tricky, though.

In the current work, they confirmed that the bigger, «stronger» centromeres were indeed more likely to go toward the pole of the cell that would become the egg.

«Next, we need to look at what is missing to coax immature germ cells to become eggs or sperm in the lab.

«The leap of faith is finding the viable sperm or oocytes [cells that become eggs],» says John Critser, scientific director of the Cryobiology Research Institute in Indianapolis.

The results help fill in the scientific puzzle kicked off by Dolly's cloning, which proved that mammalian egg cells were capable of dissolving the genetic roadblocks that limit the potential of most adult cells to give rise to only a single type of tissue — that of the organ from which they hail — whereas embryonic stem cells have the potential to become virtually any kind of body tissue.

Because the cells that give rise to sperm divide frequently — about 23 times a year — they are much more likely to accumulate genetic copying errors than the female precursor cells, oocytes, which divide only twice before becoming eggs.

Germ cells, irrespective of the sexual fate (to become sperm or eggs), have the potential to feminize the body in medaka.

And so they have long sought haploid embryonic stem cells, which can become any kind of tissue but contain just one set of genes, like a sperm or egg.

The pollen tube (stained blue) penetrates deep enough to reach and fertilize local egg cells (arrows)-- the beginning of the process by which they become seeds.

Nonetheless, it has become increasingly clear that the fate of an embryo may be cast in the ovarian follicles, where egg cells are built.

It may seem like an arcane debate, but it has life - and - death ramifications every day, when IVF practitioners peer at egg cells through microscopes and try to predict the fate of the embryos they might become.

They prohibit breeding animals in which human stem cells might have become sperm or eggs, and they rule out primate - human experiments.

The acquisition of so much cellular material from its sisters almost certainly helps the egg start a program of growth through which it becomes the largest cell in the mammalian body.

If egg cells don't go into stasis they can't become mature eggs and they will never have the chance to form a new life.

Once in a while, retroviruses infect sperm and egg cells and become «endogenous,» meaning they are passed down from generation to generation.

Cells destined to become sperm instead developed into eggs when injected into the abdomen (beige oval) of female trout.

A team of scientists has coaxed a rainbow trout cell slated to become sperm to develop into a female egg.

This disruption halts the maturation of germ cells by interfering with meiosis, the process by which an individual's genetic material is divided and sorted into what eventually becomes eggs and sperm.

The mistakes often happen during an exchange of genetic material between the partners of each pair of chromosomes, known as crossing over, which occurs in the cells of the testes and ovaries destined to become sperm or eggs.

SCNT is a technique wherein the nucleus from a somatic cell (an adult cell that is not a sperm or egg, i.e. not the gametes) is implanted into an enucleated egg cell which can then be implanted into, and develop in, a surrogate mother, and potentially become an adult organism.

SCNT is a technique wherein the nucleus from a somatic cell (an adult cell that is not a sperm or an egg) is implanted into an enucleated egg which can be implanted into, and develop, in a surrogate mother, and potentially become an adult organism.

The method we have begun establishing protocols for involves the use of primordial germ cells (PGCs)-- a kind of stem cell that becomes sperm and eggs.

Once an egg cell is fertilized by a sperm, it will divide and become an embryo.

In the meantime, your precious eggs become fertilized by the sperm and you sit and wait to see if the cells start to develop into an embryo.

For you who don't know what is spaying, it is a surgical removal of a female cat's internal reproductive structures and this includes its ovaries or the place where egg cells are produced, Fallopian tubes, uterine horns or the two long tubes where a kitten soon to be develop and grow, and a small part of its uterine body or small parts of uterus which is merged with uterine horns and become one body.

Germ cells are what become sperm and eggs.

The method we have begun establishing protocols for involves the use of primordial germ cells (PGCs)-- a kind of stem cell that becomes sperm and eggs.

As the cells in the fertilized eggs divide and become embryos, people who work at the lab monitor the progress.