An Organism That Exists As A Group Of Cells

The life sciences focus on patterns, processes, and relationships of living organisms. Life is self-contained, self-sustaining, self-replicating, and evolving, operating according to laws of the physical world, as well as genetic programming. Life scientists use observations, experiments, hypotheses

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The vast range of maximum lifespan differences between species provides convincing evidence that longevity is genetically influenced. An elephant lives about 10−20 times longer than a mouse, yet both s have roughly the same number of lifetime heartbeats — the elephant at 30 per minute and the mouse at 300 per minute.

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DNA: DNA, organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells that codes genetic information for the transmission of inherited traits.

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acquired trait: A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation (for example, the large muscles of a weightlifter). adaptation: Any heritable characteristic of an organism that improves its ability to survive and reproduce in its environment. Also …

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Senescence (/ s ɪ ˈ n ɛ s ə n s /) or biological ageing is the gradual deterioration of function characteristic of most complex lifeforms, arguably found in all biological kingdoms, that on the level of the organism increases mortality after maturation.The word senescence can refer either to cellular senescence or to senescence of the whole organism…

Specialization in single-celled organisms exists at the subcellular level; i.e., the basic functions that are divided among the cells, tissues, and organs of the multicellular organism are collected within one cell.Unicellular organisms are sometimes grouped together and classified as the kingdom Protista. See protist.

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Fact sheet published by the National Human Genome Research Institute (NHGRI) about cloning (human cloning, cloning, theutic cloning, etc.)

When they looked at the gaseous composition of Mars and Venus, they saw that the atmosphere was largely composed of the generally unreactive gas carbon dioxide.According to their hypothesis, both these planets would be dead.. However, when they looked at Earth, they saw that the atmosphere was an unusual and unstable …

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Hematopoietic Stem Cells (HSCs) are responsible for the production and replenishment of all blood cell types during the entire life of an organism.

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A genetic chimerism or chimera (also spelled chimaera) is a single organism composed of cells with distinct genotypes.In s, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form (), and if the zygotes were of differing sexes then even the …

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