Oocyte development and the transition to embryogenesis are orchestrated by a suite of maternal-effect genes and protein complexes that establish the molecular environment necessary for early cell ...

A team of scientists at the MRC Laboratory of Medical Sciences (LMS) has uncovered a previously unknown mechanism that controls how genes are switched ‘on’ and ‘off’ during embryonic development.

Over the past few decades, growing evidence has challenged the belief that inheritance is governed solely by DNA sequences. Scientists now recognize the crucial role of epigenetic inheritance—the ...

A group of scientists led by Dieter Egli has demonstrated base editing in human embryos. Base editing was shown to precisely edit embryonic DNA but also resulted in off-target edits and mosaicism.

A small tissue fold in fly embryos, once thought purposeless, plays a vital role in stabilizing tissues. Researchers show that it absorbs stress during early development, and its position and timing ...

Two separate research teams used base editing to make single-nucleotide changes in human embryos this month, targeting genes tied to cholesterol regulation, blood disorders, and early development. One ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

For the first time, stem cells typically considered restricted to forming body tissues spontaneously formed a yolk-sac-like structure in a model of the human embryo. Stem cell models of human embryos ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A new tool allows parents undergoing in vitro fertilization to screen ...

During in vitro fertilisation (IVF), embryos undergo genetic testing before they are transferred to the uterus – but researchers have found that a widely used test cannot detect genetic abnormalities ...

Modern IVF treatment can now achieve substantially higher success rates than historical approaches while dramatically reducing twin and triplet pregnancies, according to new research presented at the ...