Sentences with phrase «fertilised by»

Agriculture had increased use of fertilisers following WW2 and the plankton may be being fertilised by excess agricultural fertiliser running off the land and being transported to the North Sea by rivers.

During IVF, mature eggs are collected (retrieved) from a woman's ovaries and fertilised by sperm in a laboratory.

«Therefore there's a chance that the egg cells have been fertilised by sperm other than that of the intended father.»

A Dutch medical institution announced an investigation Tuesday after discovering that up to 26 women may have been fertilised by the wrong sperm cells at its IVF treatment laboratory.

«For some of the 26 couples, frozen embryos are still available but the chance remains that they (too) have been fertilised by the sperm from a man other than the intended father,» the UMC said.

It's not clear why a conquering male might refrain from destroying existing eggs, although they might offer eggs fertilised by the new male a better chance of survival if a predator attacks the nest.

Unusually, the victorious toad continued to care for the eggs fertilised by its rival.

In the Cape bee, female worker bees are able to reproduce asexually: they lay eggs that are essentially fertilised by their own DNA, which develop into new worker bees.

Normally, the honeybee is no exception to this rule: the female queen bee produces new offspring by laying eggs that have been fertilised by sperm from male drones.

These are caused when an egg cell lacking a nucleus is fertilised by a sperm cell.

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

To garner such a high proportion of distant fathers, therefore, Dow speculates that the oaks actively favour seeds fertilised by pollen from outside the stand — perhaps by selectively aborting embryos fertilised by nearby trees which may compete less well for nutrients during seed development.

When a female has picked a male, she presents her genital opening, or cloaca, to him, but can instead be fertilised by a female mimic, which rushes in first.

So in animals, before an egg cell is fertilised by a sperm, its centrioles are eliminated, ensuring that the resulting embryo receives only the sperm's centrioles.

This can make one egg to be fertilised by sperm from another man while the other egg is fertilised by sperm a few days later from a different man.

If our Purple Jalapeno keeps self fertilising, or is fertilised by another Purple Jalapeno, then we know for certain we are going to get pods with seeds that will, «come true», that is to say, collected seeds will grow another Purple Jalapeno plant.

Not exact matches

A chemical pregnancy (or as my doctor nicely termed it, a threatened abortion) basically means although an egg was fertilised, the clump of cells did not implant successfully, and the hormones triggered by implantation did not stop menstruation from happening.

The researchers believe the hammerhead shark reproduced by a type of asexual reproduction called automictic parthenogenesis, whereby an unfertilised egg is activated to behave as a normal fertilised egg by a small, nearly genetically identical cell known as the sister polar body.

Schlechter - Helas says the females benefit from being smelly too as they are not sexually harassed by horny males once their eggs have been fertilised.

By fertilising plankton blooms that lock away carbon dioxide, iron - laden dust seems to have been the planet's main thermostat for the past 4 million years.

Professor Paul Fowler of the University of Aberdeen, who coordinated the $ 2.9 m study funded by the European Commission, said: «The biggest effects on the fetal ovary were seen when the sheep were switched to sewage sludge fertilised fields in the last two to three months of pregnancy.

The study by British and French scientists from the universities of Nottingham, Aberdeen (UK) and Paris - Saclay (France), The James Hutton Institute (Aberdeen) and UMR BDR, INRA, Jouy en Josas (Paris, France) published in the journal Scientific Reports, has shown striking effects of exposure of pregnant ewes — and their female lambs in the womb — to a cocktail of chemical contaminants present in pastures fertilised with human sewage sludge - derived fertilizer.

Prof Robin Lovell Badge, Crick Institute, on the science: «The experiments reported by Junjiu Huang and colleagues (Liang et al) in the journal Protein Cell on gene editing in abnormally fertilised human embryos are, I expect, the first of several that we will see this year.

At present, the only way to prevent some plants self - fertilising is to remove the male parts of flowers by hand, which is very labour intensive.

The findings, published today in the journal Current Biology, are a further example of sexual selection say the researchers — a theory first proposed by Charles Darwin in 1871 — and in particular the evolutionary trade - off between «pre - and post-copulatory reproductive strategies»: traits that help males compete for access to mates versus those that help males compete to fertilise eggs.

The findings suggest that 27 per cent of the variance in pregnancy outcome was accounted for by hair cortisol concentrations after controlling for other known factors that are linked to IVF success such as age, Body Mass Index (BMI), number of eggs retrieved and the number of eggs fertilised.

A female white - spotted frog responds to the mating call by entering into the bamboo section to lay her eggs on the inner walls of the section, leaving after the male frog has fertilised the eggs.

A study led by PhD candidate Mr K. S. Seshadri from the Department of Biological Sciences at the National University of Singapore's Faculty of Science has revealed that male white - spotted bush frogs (Raochestes chalazodes) dedicatedly guard their fertilised eggs from other cannibalistic male frogs and predators.

«Larger testes create more sperm, so males with larger testes — but lacking a weapon — may be able to compensate by fertilising more eggs in the few mating opportunities they do achieve than males with intact weapons but smaller testes,» says Joseph.

Farmers who fertilise grassland with treated sewage sludge are required by the Department of the Environment to wait three weeks before allowing animals to graze.

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 experiments reported by Junjiu Huang and colleagues (Liang et al) in the journal Protein Cell on gene editing in abnormally fertilised human embryos are, I expect, the first of several that we will see this year.

The nucleus from the donor's fertilised egg is discarded and replaced by that from the mother's fertilised egg.

Model organisms are beloved by researchers investigating developmental biology, the progression of an organism from a fertilised egg into an adult.

The in vivo CAM assay was carried out as described elsewhere [21], using fertilised chick eggs, provided by Granja Santa Isabel (Córdoba, Spain).

Japanese scientists said Monday they had grown mouse eggs entirely in the lab, then fertilised them to yield fertile offspring, a scientific first cautiously hailed by experts in human reproduction.

Seeds and spores carried by the wind and birds has fertilised the island and enabled the growth of plant life.

Seeds and spores carried by the wind and birds has fertilised the island and enabled the growth of plant life and exotic blooms.

Facilitated by the collection of pollen from sacks scattered throughout the environment, you can fertilise entire cave networks, turning them from sparse tunnels into a thriving neon oasis.

Yes, a certain volume of water may get fertilised eventually anyway, but by fertilising it now can't we speed up the rate and thereby increase the general rate of carbon capture by the oceans?

Geoengineering aims to cool the Earth by methods including spraying sulphate aerosols into the stratosphere to reflect sunlight, or fertilising the oceans with iron to create carbon - capturing algal blooms.