Sentences with phrase «by fertilisation»

«We need to find ways to reduce these emissions caused by fertilisation without reducing the productivity of the system,» she added.

Reproduction of flowering plants occurs within a plant's ovule by the fertilisation of both the egg and a larger central cell by two sperm cells.

Not exact matches

Ian Wilmut is now the professor of reproductive biology at the Scottish Centre for Regenerative Medicine at Edinburgh University, and in February 2005 he was granted a licence by the Human Fertilisation and Embryology Authority to proceed to make human clones.

The goal is to allow the coexistence of the most contradictory interpretations: maternity, contraception or abortion; voluntary sterilisation or in - vitro fertilisation; sexual relations within or outside marriage, at any age, under any circumstance, as long as one abides by the triple precept of the new ethic: the partners» consent; their health security; and respect for the woman's right to choose.Reproductive health is the Trojan horse of the abortion lobby and of the global sexual revolution.

Bishop Michael Nazir - Ali, a former chairman of the Human Fertilisation and Embryology Authority's ethics committee, the UK's fertility watchdog has criticised a decision by the NHS to fund a new fertility clinic that offers treatment to couples including those in same - sex partnerships.

The Alliance of Pro-Life Students (APS) was created in 2012 to help overcome these obstacles by building and supporting university pro-life communities united by a lasting and profound respect for human life from fertilisation to natural death.

James Bogle looks at the historical roots of the current undermining of fatherhood and the family by means of experimental laws and jurisprudence, the latest manifestation of which is the government's Human Fertilisation and Embryology Bill which goes so far as to try and eliminate legal fatherhood for children in certain circumstances.

A MOMENT OF TRUTH The biggest moral issue for Catholics in English politics during this year of grace 2008 will surely, in the perspective of history, turn out to have been the Human Fertilisation and Embryology Bill, introduced into Parliament by the Government in November, with the intention that it will become law early in 2009.

The petitionreads as follows: «We the undersigned petition the Prime Minister to allow free votes on the embryology and fathers components of the Human Fertilisation and Embryology Bill when considered by the House of Commons».

It occurs when something goes wrong during the fertilisation process, and is caused by an abnormal cell growth of all or part of the placenta.

The embryos to be used in the research are ones that would have been destroyed, donated by couples receiving In - Vitro Fertilisation treatment who do not need them.

Their conclusions were derived from an analysis of all UK treatment cycles with sperm donation registered by the Human Fertilisation & Embryology Authority (HFEA) between 1991 and 2012.

At a public debate last night, Andy Greenfield, a member of an independent panel convened by the UK Human Fertilisation and Embryology Authority (HFEA) to advise the government, revealed that new, unpublished data gave added reassurance that the procedure would be safe.

Though his name is curiously absent from most biographical dictionaries of scientists, it was two papers published by the then 25 - year - old student at Columbia University in New York City in the early 1900s that demonstrated the close correlation between the behaviour of Mendel's hereditary units and that of the chromosomes in meiosis and fertilisation.

Concerns have been stirred by reports of research in China to correct disease - causing genetic mutations in non-viable embryos in 2015 and the granting, by the Human Fertilisation and Embryology Authority (HFEA), of a licence to allow genome editing of embryos in the UK February 2016.

After years of scientific and ethical debate, the United Kingdom passed a law last year that would allow fertility clinics there to offer the technique — but on a case - by - case basis and closely overseen by that country's Human Fertilisation and Embryology Authority (HFEA), which regulates assisted reproduction and embryo research.

The vaccine would prevent fertilisation by triggering an immune response against proteins unique to the squirrel's sperm.

«A viable solution is to induce «triploidy» by pressure - treating salmon eggs just after fertilisation — where the fish grows as normal, but with both sex chromosomes; this is normal for farming rainbow trout.

In vitro fertilisation (IVF) is a process by which an egg is fertilised by sperm outside the body: in vitro.

The approval on February 1 by the UK's Human Fertilisation and Embryology Authority (HFEA) represents the world's first endorsement of such research by any national regulatory authority.

A 2016 report by the Human Fertilisation and Embryology Authority showed that freezing eggs for later use is also growing in popularity.

Led by Daisuke Maruyama of Nagoya University's Institute of Transformative Bio-Molecules, a team of international researchers from Singapore, Germany, Saudi Arabia and Austria has discovered that, following fertilisation, the persistent synergid cell fuses with the endosperm, triggering its inactivation.

By transmitting the genetic information to the next generation and marking the beginning of a new life, the encounter between female and male gametes at fertilisation is one of the most fundamental processes in biology.

Because of this, the females may turn to parthenogenesis — reproduction without fertilisation from a male — as a last resort to produce offspring and avoid extinction, says a team led by Andrew Fields of Stony Brook University in New York.

In an editorial entitled «Santa Claus in the fertility clinic» [3], to accompany the world report by the International Committee for Monitoring Assisted Reproductive Technologies (ICMART), Professor Hans Evers highlights the fact that in 2010 there were 220,000 in vitro fertilisation (IVF) treatments, but there were more than 455,000 ICSI treatments in the world.

Success of pollination and fertilisation is influenced not only by the amount of pollen transferred to a stigma of a conspecific flower [54 — 57], but also by the time the pollen is exposed to temperature, humidity and UV - radiation, and other factors reducing the ability of pollen grains» germination [58,59].

The law permits the country's Human Fertilisation and Embryology Authority (HFEA) to allow the technique to be used in fertility clinics on a case - by - case basis [4].

The procedure would involve fertilising a woman's egg by in - vitro fertilisation outside the body and transplanting the fertilised nucleus to an egg from another woman which has had its nucleus removed.

The research application from Doug Turnbull and Mary Herbert at the University of Newcastle will be decided upon by the UK's regulatory body, the Human Fertilisation and Embryology Authority, over the next few weeks.

In the earliest moments of a mammal's life, the developing ball of cells formed shortly after fertilisation «does as mother says» — it follows a course that has been pre-programmed in the egg by the mother.

Whereas the derivation of stem cell lines from human embryos is subject to specific regulation by the Human Fertilisation and Embryology Authority (HFEA), UK law does not distinguish between fetal tissue and other tissue from living patients.

A new technique that allows embryos to develop in vitro beyond the implantation stage (when the embryo would normally implant into the womb) has been developed by scientists at the University of Cambridge allowing them to analyse for the first time key stages of human embryo development up to 13 days after fertilisation.

Research using human induced Pluripotent Stem Cells (iPSC) and human Embryonic Stem Cell (hESC) lines is not covered by the Human Fertilisation and Embryology Act (2008).

The new chair of the Human Fertilisation and Embryology Authority, now empowered to permit scientists to create hybrid embryos and saviour siblings, is not a whit dismayed by the ethical and religious fracas that broke out as the enabling bill laboured through parliament.

The research in Newcastle was approved by the UK's fertility regulator, the Human Fertilisation and Embryology Authority.

The complex mechanisms which orchids have evolved to achieve cross-pollination were investigated by Charles Darwin and described in Fertilisation of Orchids (1862).

But the bill was defeated by 336 to 176 during a committee stage debate on the Human Fertilisation and Embryology Bill.

This Act established one organisation, the Human Fertilisation and Embryology Authority (HFEA), to supervise and license all fertility clinics throughout the UK It also provides information and advice to the British government about embryos and treatment services governed by the Act, and endeavours to ensure that the whole area of reproductive technology is practiced in a transparent manner.

I'm sure we all know young couples who desperately want a baby but whose dreams are being dashed; endometriosis and polycystic ovarian syndrome (PCOS) are familiar terms even if we don't really understand what they mean; IVF (Invitro Fertilisation) use has skyrocketed (one in 29 Australian children is now conceived by some assisted technology); young men now face the reality that their sperm might not be up to the task when finally asked to perform (sperm counts of healthy males have more than halved in the last 50 years).

Pregnancies conceived by vitro fertilisation ivf with a known date of singles isla.

These issues are not dealt with by individual ethics committees but are instead decided by the HFEA (Human Fertilisation and Embryology Authority).

Models also differ significantly in the degree of CO2 fertilisation they allow, and the extent to which CO2 responses are constrained by nutrient availability; the extent to which CO2 concentrations affect the global distribution of C3 and C4 photosynthetic pathways; and the impacts of climate, CO2 and land management on the tree - grass balance.

Earlier projects with iron fertilisation were more successful because they used algae protected by hard shells that do not thrive in the Southern Ocean, the AWI said.

A suggestion was made that the current increase in ring width in the high latitudes might be due to CO2 fertilisation as well as higher temperatures, but this is unsupported by research.

It is true that more practical research has been done on some CDR techniques, but to imply that large - scale biochar or BECCS plantations, ocean iron - fertilisation (OIF), ocean alkalinisation or enhanced weathering by spreading rock dust over millions of square kilometres — to name but a few CDR options — are well tested and low - risk is (to put it bluntly), also «nuts».

After the «recklessness» of the decision by the UN Convention on Biological Diversity to move against ocean fertilisation experiments, one argued, we shouldn't «encourage international bodies to go around declaring moratoria».

But any benefits of «CO2 fertilisation» may be temporary and are outweighed by the negative consequences of climate change, one of the authors told Carbon Brief.

van der Sleen, P. et al. (2014) No growth stimulation of tropical trees by 150 years of CO2 fertilisation but water - use efficiency increased, Nature Geoscience, http://nature.com/articles/doi:10.1038/ngeo2313 & Cernusak, L.A. (2014) Tropical languor, Nature Geoscience, http://nature.com/articles/doi:10.1038/ngeo2328

Moreover the recent decline of the yearly increments d (CO2) / dt acknowledged by Francey et al (2013)(figure 17 - F) and even by James Hansen who say that the Chinese coal emissions have been immensely beneficial to the plants that are now bigger grow faster and eat more CO2 due to the fertilisation of the air (references in note 19) cast some doubts on those compartment models with many adjustable parameters, models proved to be blatantly wrong by observations as said very politely by Wang et al.: (Xuhui Wang et al: A two-fold increase of carbon cycle sensitivity to tropical temperature variations, Nature, 2014) «Thus, the problems present models have in reproducing the observed response of the carbon cycle to climate variability on interannual timescales may call into question their ability to predict the future evolution of the carbon cycle and its feedbacks to climate»

In the south - western USA the total area covered by deserts may decline by up to 60 % if CO2 - fertilisation effects are realised (Bachelet et al., 2001).