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Plants have neither supportive bone tissue nor muscles, and yet they can form rigid structures like stalks and even tree trunks. This is due to the fact that plant cells are enveloped by a stable cell wall. The main component of the plant cell wall is cellulose, which represents almost 50 percent of the total cell wall material and, at one billion tonnes per year, is the most frequently produced macromolecule in nature.
crops, such as barley, rice and wheat, and in poplar and soya beans that have the same

Females remain unmated when competition for preferred mates is too big – but then often smuggle their eggs into other nests
with regional song dialects, in which females prefer to mate with males of the same

On 12 February 2022, Charles Darwin would have been 213 years old. In honour of the British naturalist, the international Darwin Day will be celebrated worldwide tomorrow. One person who recently sailed in Darwin’s footsteps is Eduardo Sampaio from the MPI of Animal Behavior in Constance. He spent ten days on board the Captain Darwin in the waters off Cape Verde – almost 200 years after Charles Darwin visited the islands off the West African coast.
The 12-metre sailing boat takes the same route as the HMS Beagle did back then.

Female songbird promiscuity can reduce the negative consequences of inbreeding in socially monogamous birds
Therefore, young raised in the same brood are often sired by different males.

Auf dem Weg zu neuen Biokatalysatoren
Faszinierenderweise gehören beide Enzyme zur Superfamilie der „Radikal S-Adenosyl-Methionin (SAM

Hybrid offspring of different house mice populations show a preference for mating with individuals from their father’s original population
Later in life, individual mice prefer to mate with mice that speak the same language

Unconsciously, right-handers associate good with the right side of space and bad with the left. But this association can be rapidly changed, according to a study published online March 9, 2011 in Psychological Science, by Daniel Casasanto (Max Planck Institute for Psycholinguistics) and Evangelia Chrysikou (University of Pennsylvania). Even a few minutes of using the left hand more fluently than the right can reverse right-handers’ judgments of good and bad, making them think that the left is the ‘right side’ of space. Conceptions of good and bad are rooted in people’s bodily experiences, and change when patterns of bodily experience change.
Participants wore a bulky ski glove on one hand, with the other glove dangling from the same

Female songbird promiscuity can reduce the negative consequences of inbreeding in socially monogamous birds
Therefore, young raised in the same brood are often sired by different males.

Sex difference in the brain varies according to social status
However, even species where both sexes sing identically, display the same sex differences

Sex difference in the brain varies according to social status
However, even species where both sexes sing identically, display the same sex differences