Artificial selection cannot occur without inherited variation.
Explanation:
Artificial selection is the *process of breeding animals and cultivating plant which have certain desirable inherited characteristics*. It is an intentional way of selection,it is different from natural selection.
In Artificial selection, Animals bred or plants that are cultivated at home garden do not occur exactly the way they are in the wild. They are the result of many centuri of selection process by humans. Man has stipulated such plants/Animal by *selecting out undesired characters to ensure higher yields of resistance*, wherefore inherited traits(variations) are used in the selection process.
*Artificial selection cannot occur without inherited variation because the inherited traits/variation could be adaptations that will help the specie to survive*.
This is a form of active transport that enable cells to import large particles that cannot pass across the membrane. It is a bulk transport system. The opposite of endocytosis s exocytosis where the cell expels large particles to the outside of the cell.
It it not, In the dispersive model, one of the two resulting double helices is made of two old strands, and in the semiconservative model the other is made of two new strands.
