Sentence examples for egg nucleus from inspiring English sources

A sperm enters an archegonium and fuses with the egg nucleus.

They also want to develop embryonic stem cells by nuclear transfer, the replacement of an egg nucleus with one from an adult cell.

It is not clear whether fertilization of the egg nucleus takes place while the fruit is still on the tree or months after it has fallen.

Once inside the egg, the somatic nucleus is reprogrammed by egg cytoplasmic factors to become a zygote (fertilized egg) nucleus.

In fact, whole spermatozoa injected into unfertilized eggs cannot elicit the activation reaction or merge with the egg nucleus.

Fertilization, union of a spermatozoal nucleus, of paternal origin, with an egg nucleus, of maternal origin, to form the primary nucleus of an embryo.

A mature egg is able to support the formation of a zygote nucleus; i.e., the result of fusion of spermatozoal and egg nuclei.

Maturation is the final step in the production of functional eggs (oogenesis) that can associate with a spermatozoon and develop a reaction that prevents the entry of more than one spermatozoon; in addition, the cytoplasm of a mature egg can support the changes that lead to fusion of spermatozoal and egg nuclei and initiate embryonic development.

The procedure's inventor, the Oregon Health & Science University biologist Dr. Shoukhrat Mitalipov, was now proposing to treat infertility in older women by transferring their egg nuclei into the enucleated eggs of younger women.

This would be in accord with measurements of protein concentrations in different nuclear bodies performed in Xenopus egg nuclei (36).

Gynogensis - sperm from males of a related species activate egg development, but the sperm nuclei do not fuse with egg nuclei.