News tagged with sperm
Related topics: eggs , fertilizer , genes , infertility , females
ICSI or IVF: Babies born from frozen embryos do just as well
Analysis of the longest running ICSI programme in the United States has found reassuring evidence that babies born from frozen embryos fertilised via ICSI (intracytoplasmic sperm injection) do just as well as those born from ...
Jun 29, 2009 |
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High levels of cycling training damage triathletes' sperm
The high-intensity training undertaken by triathletes has a significant impact on the quality of their sperm, the 25th annual conference of the European Society of Human Reproduction and Embryology heard today (Monday 29 ...
Jun 29, 2009 |
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Good males are bad fathers
Contrary to predictions, males of high genetic quality are not very successful when it comes to fertilizing eggs. A new study on seed beetles by Swedish and Danish scientists Göran Arnqvist and Trine Bilde shows that when ...
Jun 25, 2009 |
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Size did matter -- evidence of giant sperm found in microfossils
The mystery of giant sperm present in some living animal groups today has now taken on a new dimension -- in one group of micro-crustaceans new evidence shows that it is a feature at least 100 million years ...
Jun 18, 2009 |
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Jumping genes discovery 'challenges current assumptions'
Jumping genes do most of their jumping, not during the development of sperm and egg cells, but during the development of the embryo itself. The research, published this month in Genes and Development, "challenges standard assump ...
Jun 12, 2009 |
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Laptops Linked to Male Infertility
While fatherhood might be far from the minds of most young men, behavior patterns they establish early on may impact their ability to become a dad later in life. Excessive laptop use tops this list of liabilities, ...
Jun 12, 2009 |
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New research shows potential for a male contraceptive
Researchers have known for more than half a century that sperm is able to fertilize an egg only after it has resided for a period of time in the female reproductive tract. Without this specific interaction ...
Jun 09, 2009 |
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Is this the beginning of the end of plant breeding?
No human is a clone of their parents but the same cannot be said for other living things. While your DNA is a combination of half your mother and half your father, other species do things differently. The advantage of clonal ...
Jun 09, 2009 |
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Thieving whale caught on video gives rare clues about hunting strategy, sound production
For decades scientists have been intrigued by the variety of sounds emitted by sperm whales, partly due to a popular theory that suggests that the sounds might contain information about the animals' size. ...
May 21, 2009 |
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Business booms at world's biggest sperm bank
Business is booming for the world's biggest sperm bank, Denmark's Cryos, which is struggling to meet demand despite a soaring number of donors and new offices opening around the world.
May 15, 2009 |
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Israeli sperm bank posts diminishing returns
Wall Street giants are not the only banks hit by diminishing assets. New research for an Israeli sperm bank shows that depositors are 40 per cent less fertile than a decade ago, the Haaretz daily reported.
May 11, 2009 |
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Analysing effects of underwater noise on sperm whales
(PhysOrg.com) -- Scientists are investigating whether or not noise generated by the oil and gas industry might affect the day-to-day behaviour of sperm whales.
May 07, 2009 |
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Chromosome breakpoints contribute to genetic variation
A new study reveals that - contrary to decades of evolutionary thought - chromosome regions that are prone to breakage when new species are formed are a rich source of genetic variation.
Apr 23, 2009 |
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Analysis knocks down theory on origin of cell structure
(PhysOrg.com) -- Understanding how living cells originated and evolved into their present forms remains a fundamental research area in biology, one boosted in recent years by the introduction of new tools ...
Apr 22, 2009 |
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New study yields clue to how stem cells form
An Emory University study shows some of the first direct evidence of a process required for epigenetic reprogramming between generations - a finding that could shed more light on the mechanisms of fertilization, ...
Apr 16, 2009 |
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