selección natural

selección natural

The differential survival and reproduction of classes of organisms that differ from one another in one or more usually heritable characteristics. Through this process, the forms of organisms in a population that are best adapted to their local environment increase in frequency relative to less well-adapted forms over a number of generations. This difference in survival and reproduction is not due to chance.

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التحسين

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نوع المصطلح: اسم
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المجال / النطاق: علم الآثار
الفئة: التطور
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علم الآثار; التطور

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علم الآثار; التطور

A description of how a natural phenomenon will occur under certain circumstances.

pirimidina

علم الآثار; التطور

A kind of base. In DNA, cytosine (C) and thymine (T) are pyrimidines. In RNA, cytosine (C) and uracil (U) are pyrimidines.

ecosistema

علم الآثار; التطور

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علم الآثار; التطور

A cell, functionally part of the nervous system, that reacts to the presence of light. It usually contains a pigment that undergoes a chemical change when light is absorbed. This ...

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علم الآثار; التطور

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