Biology Online is a Biology blog and dictionary site that provides up to date articles on the latest developments in biological science. The Biology Online Dictionary is a completely free and open dictionary with over 60,000 biology terms. It uses the wiki concept, so that anyone can make a contribution.
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mitochondrial dna eve
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If one wants to trace down lineage, that person could turn to the cell’s powerhouse, the mitochondrion. This organelle contains its own special set of DNA believed as inherited solely from mothers across generations.  Thus, looking at the mitochondrial DNA (by mtDNA genealogical DNA testing) could help track down lineage, and for this reason, help…

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Seagrasses are marine flowering plant that comprises more than 60 different species. It grows by rhizome extension forming like grassland. Seagrasses also photosynthesize in submerged photic zone that mostly occur in shallow coastal water. In productive ecosystem seagrasses beds are diverse that can accommodate hundreds of associated species like fishes, macroalgae, mollusks and nematodes. However,…

allergy
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When allergy season looms, some people with serious hypersensitivity to allergens tend to be apprehensive of what may come. Some would rather stay indoors than risking the odds of sucking up triggers that could instigate severe allergic reactions. Apart from triggers from the environment, other common factors for allergy include food, medication, certain toxins, venom…

sex cell
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In essence, our body consists of two major types of cells – one group involved directly in reproducing sexually (called sex cells) and another group that are not (called somatic cells). In particular, the female sex cell is referred to as the ovum (also called egg cell) whereas the male sex cell, the sperm cell.…

normal gut flora
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When sadness reeks in and you feel as if you are all by yourself, think again. That is because you are never alone. As a matter of fact, millions of microorganisms reside in our body day in and out. They are the normal flora. Our body is a world of microscopic living entities that inhabit…

mosquitoes
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Up to what extremes are we willing to take in order to ensure the survival of our species? Mosquitoes may be tiny and insignificant. But, they are one of the deadliest ectoparasites that ever lived. They do not just feed on our blood. They could even leave us with a gift – like a “Pandora’s…

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Blacked-legged Kittiwakes are pelagic gulls that often feed on fish and macro-zooplankton at the ocean surface. They breed in colonies ranging from few to thousands of pairs which prominently observed in their open, sea-cliff nesting habitats. Blacked-legged Kittiwakes are the most popular models for research because they can be easily monitored and captured. They also…

Selfish gene - illustrated by vix maria
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What is a selfish gene? A selfish gene is not a gene that makes an individual selfish. In fact, it may even be involved in the demonstration of a selfless act, a mark of altruism. Selfish gene elements (or selfish DNA) are nucleotide sequences that make copies of itself within the genome. They are regarded…

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Medicago sativa is a perennial flowering plants that belongs to a legume family.  This plant is known in forage crop, grazing, silage, green manure and cover crop.  Medicago sativa develops potential for medicinal uses and thrive mostly in an arid climate. The aim of this particular research is to determine the floral traits and pollinators visitation…

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Dolphins performing acrobatic tricks have, time and again, fascinated and mesmerized people. As early as 1860s, capturers took dolphins and other cetaceans (e.g. whales and porpoises) out of their aquatic habitats and held them in captivity in various parts of Europe and North America. At first, they kept them in a dolphinarium mainly as an…

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