Sentences with phrase «of sperm and egg»

Any normal person would automatically assume that aside from mixing a cocktail of sperm and egg in a fertility clinic, if a woman were to become impregnated by a specific man, she must have had sex with him.

Basal body temperature, ovulation and the risk of conception, with special reference to the lifetimes of sperm and egg.

The trouble with this view is that the «immediate product» of successful SCNT, just like the «immediate product» of the successful union of sperm and egg, is an embryonic member of the species.

The discovery is an important step toward unraveling the process of sperm and egg fusion, says Richard Schultz of the University of Pennsylvania in Philadelphia, and some male infertility may be due to mutations in Izumo.

Geneticists have identified an enzyme which regulates the production of sperm and egg cells in human reproduction.

«Insights into the development of sperm and egg cell precursors in the embryo.»

To compensate, many plants have evolved repair mechanisms and reproductive strategies that allow them to produce offspring even without the meeting of sperm and egg.

Because of this limitation, researchers have theorized that inherited methylation, also referred to as parental imprinting, largely remains stable throughout development, except during two important developmental milestones: after fertilization and during the creation of sperm and egg cells.

While getting mammals to undergo true asexual reproduction has thus far been beyond the power of science, researchers are trying to figure out why the union of sperm and egg is so important in mammalian reproduction, when all other domains of life have the ability to reproduce without sex.

Most contraceptive methods of regulating fertility do not raise the same moral issue as abortion because they do not permit the joining of the sperm and the egg.

Rather, the embryo is human merely by virtue of this physical and spiritual substance created by the union of sperm and egg (or at least by virtue of its purported ability to survive physically outside the womb)

Pregnancy results from the union of a sperm and egg.

Much has been made about the claim made by Barr Pharmaceuticals that Plan B «may also prevent fertilization of a released egg (joining of sperm and egg) or attachment of a fertilized egg to the uterus (implantation).»

They both affect motility in the Fallopian tube, which prevents the meeting of the sperm and the egg.

By increasing the number of sperm and eggs that reach the fallopian tubes, where fertilization takes place, IUI can increase the chances of fertilization and pregnancy.

And the changes are handed down: While most of the chimp genome's 24 pairs of chromosomes undergo a genetic reshuffling during the production of sperm and eggs, with genes swapped between the two copies, there is only one Y chromosome and thus no mixing — the Y is transmitted intact.

Lab - based experiments can also help answer important questions about early human development and the development of sperm and eggs cells, says Robin Lovell - Badge, a developmental biologist at the Francis Crick Institute in London and a member of the Hinxton Group steering committee.

The pink circles represent germ cells (the common origin of sperm and eggs).

In this week's Nature, Masaru Okabe and Naokazu Inoue and their colleagues at Osaka University report that the protein, which sits on the outside of sperm cells, plays a make - or - break role in the fusion of sperm and eggs.

The fats contained within also clog the ventricles, decreasing the oxygen supply to the sexual organs and preventing the spleen from creating a sufficient amount of leukocytes (white blood cells), which makes the formation of sperm and eggs difficult.

Some authors have calculated a theoretical period of two fertile days, based on estimates of the survival of sperm and eggs.1, 2 A multicenter study by the World Health Organization estimated that there are 10 presumably fertile days per cycle, on the basis of the characteristics of the cervical mucus.3

Not exact matches

«Some women with shorter intervals between periods (for example 21 days between each period) experience ovulation (the 24 - hour window when the egg is available for the sperm to fertilize) on day seven or eight, so they are prone to getting pregnant at the end of a long period,» explains Sherry Ross, MD, OB / GYN and women's health expert and author of She - ology.

And Great Barrier Reef researchers recently announced that they'd successfully repopulated parts of the reef by collecting coral eggs and sperm, growing coral larvae, and replanting those larvae in protected sites on the reAnd Great Barrier Reef researchers recently announced that they'd successfully repopulated parts of the reef by collecting coral eggs and sperm, growing coral larvae, and replanting those larvae in protected sites on the reand sperm, growing coral larvae, and replanting those larvae in protected sites on the reand replanting those larvae in protected sites on the reef.

To donate sperm or eggs, generally you have to be young — over the legal age of 18 and typically under the age of 35.

Each November in the days following the light of a full moon, coral colonies across the reef — spanning an area larger than the state of New Mexico — release millions of egg and sperm sacs within nearly minutes of one another.

The statement on Thursday comes amid a growing debate over the use of powerful new gene editing tools in human eggs, sperm and embryos, which have the power to change the DNA of unborn children.

Egg donors, sperm donors and surrogates are critical participants and patients in the use of reproductive technologies - so why are their rights and heath repeatedly overlooked?

Before they were born, they were a pair of cat eggs and a pair of cat sperm in another cat.

Debate the time all you want but don't pull this «well i think it's a child as soon as the sperm works it's way into the egg because I believe in God and I think he gives the mass of cell's a soul» bull shlt.

The religious among us keep trying to chip away at the separation of church and state by making people recite the pledge of allegiance with the God clause, installing religious symbols and displays on public property, holding prayer breakfasts for politicians, berating the removal of prayer in public schools, trying to pass laws limiting women's access to birth control, and trying to get an amendment passed outlawing abortion (since in their view God creates a soul the moment a sperm enters an egg).

The California IVF Fertility Center is pioneering what some refer to as the «Costco model» of babymaking, creating batches of embryos using donor eggs and sperm that can be shared among several different families.

Meanwhile, the February 2 issue of the New Scientist noted the work being done with stem cells to create «female sperm» and «male eggs.»

Is it when the DNA of the sperm cell and the egg cell are about to exchange genetic information?

Rather, the pills delay ovulation, the release of eggs from ovaries that occurs before eggs are fertilized, and some pills also thicken cervical mucus so sperm have trouble swimming.

Now all you need to do is continue that line of reasoning into the arena where / when the sperm and egg have united.

After all, all sperm and all eggs equate to the potential of life... yet we don't see you fighting to protect them.

A clump of cells with no brain, and no neural tube is no more «a human life» than cells from your skin layer, or a sperm cell with no change of fertilizing an egg.

I believe life begins when the sperm and egg unite, and I support quality of life not only in the womb but after birth.

Exhibit B: the buying and selling of men's sperm and women's eggs.

Again, a plausible scenario of the future might well include a picture of a husband and wife shopping at the local «sperm and egg bank» for the desired characteristics of sex, IQ, temperament, and eye and hair color for the new baby they want.

These scientist, and doctors, can not remake skin, bone, eyes, brains, oval eggs, sperm, none of the sort, so they have no real answer to create a life other than how procreation works, where again what, and how is the very first man, or woman, animal, other creatures, either in the sea, or creeping on this earth was originally created from, as where did they first come from?

Human male sperm and human female eggs are an - alogous to the millions of tons of inactive deuterium floating harmlessly in the ocean but combine them in a fusion reaction, they instantly become the expanding energy of the Sun found in all stars as they continuously fuse more hydrogen making the const - ituents of all human life..

A group of cells is a potential baby, just like every sperm and egg.

He's making my sperm penetrate her egg, and he's making sure that only one of the little guys is successful, because we all know how much fun triploidy can be.

Researchers are on the verge of creating sperm and eggs from skin cells.

The book's description of GIFT is accurate, but to say that the Church's prohibition of artificial insemination doesn't apply in this case because what is inserted into the recipient woman is no longer only sperm but a catheter containing both a retrieved egg and sperm retrieved after intercourse only lays Catholic bioethics open to the charge that it is based on an arbitrary set of boundaries discernible only to the well initiated.

She said there were no ethical concerns with this from a Christian point of view: «It's really important to distinguish between an egg and a sperm and an embryo and we believe strongly that an embryo is the beginning of human life.

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.

What science inescapably tells us then, is that each of us as a unique individual human being began when the sperm of our father and the egg of our mother united in what we call the «conception» of a new person.

Some female methods of birth control (including the birth control pill / patch / shot and IUDS) do not only attempt to prevent an egg from being released or stop the sperm from reaching the egg.