News articles tagged with 'egg'
Parental controls on embryonic development?
— 2 Dec 2011 10:11 | HealthWhen a sperm fertilises an egg, each contributes a set of chromosomes to the resulting embryo, which at these very early stages is called a zygote. Early on, zygotic genes are inert,…
UGA studies explain spread of invasive ladybugs
— 2 Apr 2011 10:58 | BiologyA University of Georgia researcher studying invasive ladybugs has developed new models that help explain how these insects have spread so quickly and their potential impacts on native…
Butterfly study reveals traits and genes associated with establishment of new populations
— 29 Mar 2011 16:22 | BiologyA team of scientists has discovered that descendants of 'exploratory' butterflies that colonised new habitats differ genetically from their more cautious cousins. The team, led by James…
Universal flu vaccine study yields success in mice
— 18 Feb 2011 20:50 | HealthNasal spray vs. injection - what would you prefer? Adelaide researchers have taken a step closer to the development of a universal flu vaccine, with results of a recent study showing…
Plants cloned as seeds
— 18 Feb 2011 17:14 | BiologyPlants have for the first time been cloned as seeds. The research by aUC Davis plant scientists and their international collaborators, published Feb. 18 in the journal Science, is a…
Squid pheromone sparks extreme aggression on contact
— 11 Feb 2011 16:30 | BiologyWhen male squid come into contact with a chemical found on the outside of eggs laid by females, they instantly go from swimming along calmly and minding their own business to a state…
Female lizard turns the table: Why exaggerated coloration makes her a good mate
— 27 Jan 2011 18:32 | BiologyMost nature lovers know that the more colourful a male fish, reptile, or bird, the more likely it is to attract a female and to have healthy offspring. Females, on the other hand, tend…
Hormones dictate breeding success in birds
— 26 Jan 2011 18:40 | BiologySome animals produce more offspring than others do. Hormones like prolactin and corticosterone can exercise a crucial influence on the behaviour of birds in the breeding season and…
Rhythmic vibrations guide caste development in social wasps
— 25 Jan 2011 18:59 | BiologyFuture queen or tireless toiler? A paper wasp's destiny may lie in the antennal drumbeats of its caretaker…
Insects that deter predators produce fewer offspring
— 25 Jan 2011 18:47 | BiologyScientists studied the defences used by caterpillars that transform into large white butterflies, called Pieris brassicae. The insects regurgitate semi-digested cabbage leaves to make…