Sentences with phrase «become eggs and sperm»

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.

Not exact matches

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..

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.

Lesbians / single women may use an anonymous or known sperm donor from a sperm bank to inseminate one or both partners» eggs and become pregnant.

We assembled mosaic tiles from first parents, from adoptive and adopting parents, from adult adoptees, from adoption professionals, from those in international, foster, domestic open and closed adoptions, from those who became parents via donor egg, sperm or embryos — in essence, we explore openness in situations in which a child is being raised by someone who is not genetically connected to him or her.

Since then, the technique has been adopted worldwide, egg and embryo freezing has become routine, and techniques to help infertile men, such as intra-cytoplasmic sperm injection, have become commonplace.

The first is working out how to make the PGCs convert to mature sperm and eggs without transplanting them back into testes or ovaries; Hayashi is trying to decipher the signals that ovaries and testes give to the PGCs that tell them to become eggs or sperm, which he could then add to artificial PGCs in culture to lead them through these stages.

When the worms smelled a bad environment, the sperm became confused, the sperm moved slower and in a less direct mode to the eggs, which reduced fertility.

If the resulting hybrid was a female, he could then fertilize its eggs with more mammoth sperm, breeding a line that would become more and more mammoth.

A quarter century ago, British physicians Robert Edwards and Patrick Steptoe faced condemnation when they added an egg to sperm in a petri dish and created an embryo that became Louise Brown.

The individuals become so far away from each other that the egg and sperm never unite, making reproduction in the wild nearly impossible.

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.

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

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

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.

A traditional surrogate becomes pregnant with her own egg and the father's sperm — via IVF or intrauterine insemination (in which sperm are placed directly in the uterus)-- and she is the child's biological mother.

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.

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.

Using a frozen egg, Arbogast fertilizes it with his own sperm and injects it into his body, causing him to become pregnant.

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.

For infertility issues that can not be treated by medicine, a surrogate, a woman who agrees to become pregnant with her own eggs and the provided sperm, or a gestational carrier, a woman who carries the provided egg and sperm in her own uterus, might also be options.