Sentences with phrase «single egg and sperm»

So much happens during pregnancy that it's basic definition — the period of time when a human being grows from the combination of genetic material from a single egg and sperm — seems almost too simplistic when you say it aloud.

Not exact matches

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.

And story number 4: Researchers have found a pair of semi-identical twins that came about when two sperm fertilized a single egg, which then split in two to give rise to two individuals.

This technique is already used with great success for infertile human couples and involves a single sperm being injected into an egg through a thin glass pipette to create an embryo which is then transferred to a surrogate female.

If a man's fertility is low a single sperm cell can be chosen and injected into an egg, forcing fertilization.

Twins are normally either identical — the result of a single sperm fertilizing a single egg, which then splits and duplicates itself — or fraternal, developing from two separate eggs fertilized by two separate sperm.

In sperm and eggs, these double sets are halved to produce single, «haploid» ones, which unite during fertilization.

An international team of researchers from Japan and the UK has discovered how a single protein, called PP4, oversees the processing of DNA during sperm and egg generation for successful fertilization.

What if somebody took those sperm and eggs from a single person and fertilised them?

The team of researchers (from three continents) have discovered that the egg and sperm genomes that co-exist in the single - cell embryo or zygote have a unique structure compared to other interphase cells.

The human body contains trillions of cells, all derived from a single cell, or zygote, made by the fusion of an egg and a sperm.

According to new research, both processes rely on a single protein that enables the seamless fusion of two cells, such as a sperm cell and egg cell, or the fusion of a virus with a cell membrane.

Sex cells — sperm and egg cells — have 23 single chromosomes each so that a paired set is created when a sperm fertilises an egg.

The human body comprises more than 200 types of cells, and every one of these cell types arises from the zygote, the single cell that forms when an egg is fertilized by a sperm.

At a consultation with a fertility specialist in October 2006, when I was 44, we learned that we could try an in vitro fertilization (IVF) treatment using donor eggs and an intracytoplasmic injection of my husbands sperm (where a single sperm is directly injected into the egg).

This technology requires technical skills that are typically not offered by veterinary practices and includes aspiration of immature or mature eggs from mares using ultrasound - guided transvaginal aspiration (TVA) of follicles, in vitro culture of the eggs, micromanipulation and microinjection of eggs with a single selected sperm, and embryo culture in the laboratory, with freezing, and transfer of embryos to synchronized recipient mares.