Darwiniana

History, Evolution, and The Darwin Debate

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Entries Tagged as 'biology'

How Spiders Breathe Under Water

June 13th, 2011 · No Comments

How Spiders Breathe Under Water: Spider’s Diving Bell Performs Like Gill Extracting Oxygen from Water ScienceDaily (June 13, 2011) — Water spiders spend their entire lives under water, only venturing to the surface to replenish their diving bell air supply. Yet no one knew how long the spiders could remain submerged until Roger Seymour and […]

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Tags: biology

DNA Can Discern Between Two Quantum States

June 5th, 2011 · No Comments

DNA Can Discern Between Two Quantum States, Research Shows ScienceDaily (June 4, 2011) — Do the principles of quantum mechanics apply to biological systems? Until now, says Prof. Ron Naaman of the Institute’s Chemical Physics Department (Faculty of Chemistry), both biologists and physicists have considered quantum systems and biological molecules to be like apples and […]

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Tags: biology

RNA and genetic diversity

May 20th, 2011 · No Comments

New Level of Genetic Diversity Discovered in Human RNA SequencesScienceDaily (May 19, 2011) — A detailed comparison of DNA and RNA in human cells has uncovered a surprising number of cases where the corresponding sequences are not, as has long been assumed, identical. The RNA-DNA differences generate proteins that do not precisely match the genes […]

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Tags: biology

‘Master Switch’ Gene for Obesity

May 16th, 2011 · No Comments

‘Master Switch’ Gene for Obesity and Diabetes DiscoveredScienceDaily (May 15, 2011) — A team of researchers, led by King’s College London and the University of Oxford, have found that a gene linked to type 2 diabetes and cholesterol levels is in fact a ‘master regulator’ gene, which controls the behaviour of other genes found within […]

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Tags: biology

How a Flatworm Regenerates

May 13th, 2011 · No Comments

How a Flatworm Regenerates Missing Tissues: Pluripotent Adult Stem Cells Power Planarian Regeneration

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Tags: biology

Whales Have Accents and Regional Dialects

May 13th, 2011 · No Comments

Whales Have Accents and Regional Dialects: Biologists Interpret the Language of Sperm Whales ScienceDaily (May 12, 2011) — Dalhousie Ph.D. student Shane Gero has recently returned from a seven-week visit to Dominica. He has been traveling to the Caribbean island since 2005 to study families of sperm whales, usually spending two to four months of […]

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Tags: biology

New Open-Source Encyclopedia

April 26th, 2011 · No Comments

Decoding Human Genes Is Goal of New Open-Source EncyclopediaScienceDaily (Apr. 24, 2011) — A massive database cataloging the human genome’s functional elements — including genes, RNA transcripts, and other products — is being made available as an open resource to the scientific community, classrooms, science writers, and the public, thanks to an international team of […]

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Tags: biology

DNA Caught Rock ‘N Rollin’

January 29th, 2011 · No Comments

DNA Caught Rock ‘N Rollin’: On Rare Occasions DNA Dances Itself Into a Different Shape ScienceDaily (Jan. 29, 2011) — DNA, that marvelous, twisty molecule of life, has an alter ego, research at the University of Michigan and the University of California, Irvine reveals.

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Tags: biology

Biologists’ Favorite Worm

January 26th, 2011 · No Comments

Biologists’ Favorite Worm Gets Viruses: Finding Means C. Elegans May Aid Studies of Human Infections ScienceDaily (Jan. 25, 2011) — A workhorse of modern biology is sick, and scientists couldn’t be happier.

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Tags: biology

Genome as It Turns on and Off

January 20th, 2011 · No Comments

Scientists View Genome as It Turns on and Off Inside CellsScienceDaily (Jan. 19, 2011) — UCSF researchers have developed a new approach to decoding the vast information embedded in an organism’s genome, while shedding light on exactly how cells interpret their genetic material to create RNA messages and launch new processes in the cell.

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Tags: biology

Gut Microbes of Premature Infant

January 18th, 2011 · No Comments

Scientists Sequence Gut Microbes of Premature InfantScienceDaily (Jan. 13, 2011) — Scientists have for the first time sequenced and reconstructed the genomes of most of the microbes in the gut of a premature newborn and documented how the microbe populations changed over time.

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Tags: biology

Fruit Fly Nervous System

January 14th, 2011 · No Comments

Fruit Fly Nervous System Provides New Solution to Fundamental Computer Network Problem ScienceDaily (Jan. 13, 2011) — The fruit fly has evolved a method for arranging the tiny, hair-like structures it uses to feel and hear the world that’s so efficient a team of scientists in Israel and at Carnegie Mellon University says it could […]

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Tags: biology

Proteins Need Chaperones

January 9th, 2011 · No Comments

Proteins Need Chaperones: Newly Discovered Processes in Production of Proteins Described ScienceDaily (Jan. 7, 2011) — Young unmarried girls used to be accompanied by chaperones at social events. Their task was to prevent their charge from having undesirable romantic rendezvous with young boys. The term “molecular chaperones” is used in cellular biology to refer to […]

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Tags: biology

Border Collie Comprehends Over 1,000 Object Names

January 7th, 2011 · No Comments

Border Collie Comprehends Over 1,000 Object Names as Verbal ReferentsScienceDaily (Jan. 6, 2011) — Researchers at Wofford College discovered that a border collie comprehends the names of over 1,000 objects, differentiating between names of objects and orders to fetch them. This research deepens the findings of researchers in Germany, who had discovered a dog that […]

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Tags: biology

Molds Can Suffer Jet Lag

January 3rd, 2011 · No Comments

Even Molds Can Suffer Jet Lag: Simple Organisms Shed Light on Inner Clock ScienceDaily (Jan. 3, 2011) — Humans are not the only species ruled by a circadian rhythm. Even simple organisms like molds are governed by an inner clock.

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Tags: biology

Immune system: a back up plan

December 27th, 2010 · No Comments

Human Immune System Has Emergency Backup PlanScienceDaily (Dec. 27, 2010) — New research by scientists at the University of California, San Diego School of Medicine and Skaggs School of Pharmacy and Pharmaceutical Sciences reveals that the immune system has an effective backup plan to protect the body from infection when the “master regulator” of the […]

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Tags: biology

Similarities in embryonic development

December 16th, 2010 · No Comments

Similarities in the Embryonic Development of Various Animal Species Are Also Found at Molecular Level ScienceDaily (Dec. 15, 2010) — The astonishing similarity in the appearance of embryos from different animal species was observed as far back as the 19th century by scientists such as Karl von Baer, Charles Darwin and Ernst Haeckel. Such observations […]

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Tags: biology

Biological computers

December 15th, 2010 · 1 Comment

Biological Computers: Genetically Modified Cells Communicate Like Electronic Circuits ScienceDaily (Dec. 14, 2010) — Genetically modified cells can be made to communicate with each other as if they were electronic circuits. Using yeast cells, a group of researchers at the University of Gothenburg, Sweden, has taken a groundbreaking step towards being able to build complex […]

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Tags: biology · technology

‘Clueless’ Housekeeping Genes

December 6th, 2010 · No Comments

‘Clueless’ Housekeeping Genes Are Activated Randomly, Study Finds ScienceDaily (Dec. 6, 2010) — Scientists at Albert Einstein College of Medicine of Yeshiva University have made an unexpected finding about the method by which certain genes are activated. Contrary to what researchers have traditionally assumed, genes that work with other genes to build protein structures do […]

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Tags: biology

Spiders and tiny brains

December 6th, 2010 · No Comments

Biologist Tracks Spiders’ Eyes to Learn How Tiny Brains Process InformationScienceDaily (Dec. 5, 2010) — Over the next year, spiders watching videos of their prey are going to help biologist Elizabeth Jakob at the University of Massachusetts Amherst and her colleagues understand how animals choose which visual elements to attend to in their environments. She […]

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Tags: biology

Bacteria Play Matchmaker?

December 4th, 2010 · No Comments

Do Our Bodies’ Bacteria Play Matchmaker? ScienceDaily (Dec. 3, 2010) — Could the bacteria that we carry in our bodies decide who we marry? According to a new study from Tel Aviv University, the answer lies in the gut of a small fruit fly. http://www.sciencedaily.com/releases/2010/12/101202124211.htm

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Tags: biology

Genetic switch for gender

December 3rd, 2010 · No Comments

Genetic Switch for Determining Gender Identified; Gene Linked to So-Called ‘Intersex’ Families ScienceDaily (Dec. 2, 2010) — The Y chromosome is supposed to genetically seal a fetus’s fate in terms of gender. Males have one X and one Y chromosome, while females have two X chromosomes. Yet, in some families a child is born with […]

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Tags: biology

2020 — The gene

November 30th, 2010 · No Comments

2020 — The gene

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Tags: biology

Ultrastructure of Cells

November 22nd, 2010 · No Comments

New Microscope Reveals Ultrastructure of CellsScienceDaily (Nov. 22, 2010) — For the first time, there is no need to chemically fix, stain or cut cells in order to study them. Instead, whole living cells are fast-frozen and studied in their natural environment. The new method delivers an immediate 3-D image, thereby closing a gap between […]

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Tags: biology