Sentences with phrase «cells during fertilization»

Sperm cells can not divide and have a limited life span, but after fusion with egg cells during fertilization, a totipotent zygote is formed with the potential to develop into a new organism.

Not exact matches

At Key Stage 3 (age 11 to 13 +, Years 7 to 9) schools have to teach: that fertilisation in humans and flowering plants is the fusion of a male and a female cell; about the physical and emotional changes that take place during adolescence; about the human reproductive system, including the menstrual cycle and fertilization; how the foetus develops in the uterus, including the role of the placenta.

The second question has in fact two facets: (a) how does it arise in the development of the individual organism during the process of growth from the moment of fertilization of the egg; and (b) how does the egg itself come to get that way — that is to say, how can we conceive of evolution as having «designed» the cell?

Because of this limitation, researchers have theorized that inherited methylation, also referred to as parental imprinting, largely remains stable throughout development, except during two important developmental milestones: after fertilization and during the creation of sperm and egg cells.

These resultant haploid cells can fuse with other haploid cells of the opposite sex or mating type during fertilization to create a new diploid cell, or zygote.

Using a newly developed method researchers at the Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA) have been able to shed light on the complexity of genome reorganization occurring during the first hours after fertilization in the single - cell mammalian embryo.

During the first hours after fertilization, the two separate genomes undergo reprogramming events that presumably function to erase the memory of the differentiated cell type and establish a state of totipotency.

Soon after the egg and sperm join during fertilization, the resultant zygote (fertilized egg cell) starts undergoing cell division.

fertilization in mice, he had switched to studying how yeast cells duplicate their genome during cell division.

The regulation of transcription during the transitions from fertilization to genome activation to cell fate specification is a critical developmental process, yet it is poorly understood.

Defeated by an initial project on in vitro fertilization in mice, he had switched to studying how yeast cells duplicate their genome during cell division.

Kathy Niakan, a stem - cell researcher at the Francis Crick Institute in London, has told the country's regulators that her work will focus on trying to understand what genes are at play during the first few days after fertilization, according to a report in the Guardian.

Taking into account that ES cells are isolated at embryonic day 3.5 post fertilization, the sequential appearance of genes specific for gastrulation, mesoderm formation, hemopoiesis, cardiopoiesis and neurogenesis during ES cell differentiation follows the timing of comparable developmental stages in embryonic development.