Sentences with phrase «sperm and eggs contain»

Not exact matches

The male sperm and the female egg each contains twenty - three chromosomes.

which contains all the dna a human needs... eggs and sperm do not contain all DNA on theirown, only till they converge

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.

It is your eggs and your partner's sperm that are being used, and it is an embryo containing your genes that will be injected into your uterus.

Their semen won't contain any sperm, however, so it can't fertilize an egg and cause a pregnancy.

For some reason their eggs contain the same 44 chromosomes as their body cells — 22 from the mother and 22 from the father — instead of half, and so the eggs can grow into gecko hatchlings without first being fertilized by sperm.

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.

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.

Developmental biologist Goro Yoshizaki of Tokyo University of Marine Science and Technology in Japan and his colleagues set out to see whether spermatogonia — male germ cells that give rise to sperm — might contain a subpopulation of cells with stem cell - like activity that can develop into either sperm or eggs.

A fly sperm consists of a tiny head containing its nucleus and a whiplike tail up to 20 times longer than the egg.

Scientists long believed that the fungal pathogen Candida albicans was incapable of producing haploid cells — which contain only one copy of each chromosome, analagous to eggs and sperm — for mating.

Some strains reproduce as cross-fertilizing hermaphrodites (both worms containing both sperm and eggs and simultaneously fertilizing each other).

The sperm carries one half of the new person's ultimate chromosomes, and the egg contains the other half.

Therefore, each sperm or egg that the body produces is unique — it contains a different mix of the mother's and father's genes.

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.