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Males help keep populations genetically healthy

A few males are enough to fertilize all the females. The number of males therefore has little bearing on a population s growth. However, they are important for purging bad mutations from the population. This is shown by a new Uppsala University study providing in-depth knowledge of the possible long-term genetic consequences of sexual selection. The results are published in the scientific journal Evolution Letters. ....

David Berger , Karl Grieshop , Uppsala University , Canada University Of Toronto , Uppsala University Department Of Ecology , Developmental Reproductive Biology , டேவிட் பெர்கர் , கனடா பல்கலைக்கழகம் ஆஃப் டொராண்டோ ,

Surprising spider hair discovery may inspire stronger adhesives

A recent study by the open access publisher Frontiers shows the first evidence that the individual hair-like structures that form spiders adhesive feet are far more diverse than expected. By looking at a sample set of these hairs, researchers have found that they have varied shapes as well as attachment properties. Understanding how spiders climb a wide range of surfaces may help scientists design new and better adhesives. ....

Stanislav Gorb , Bastian Poerschke , Clemens Schaber , University Of Kiel , Mechanical Engineering , Biomechanics Biophysics , Ecology Environment , Chemistry Physics Materials Sciences , பல்கலைக்கழகம் ஆஃப் கேல் , இயந்திர பொறியியல் ,