В чем заключается сущность оплодотворения?
1)уменьшении числа хромосом до гаплоидного набора
2)передаче без изменений наследственной информации от материнской клетки к дочерним
3)изменении хромосомного набора вида
4)восстановлении диплоидного набора хромосом

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

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hi! do you know the answer for this flvs question?

what do anaerobic organisms have in common with photosynthetic organisms?

they both appeared on earth at about the same time.

they both can only exist as single-celled organisms.

they both need an energy source in order to survive.

they both produce carbon dioxide as a waste product.

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