бинарна фисија

бинарна фисија

The method by which bacteria reproduce. The circular DNA molecule is replicated; then the cell splits into two identical cells, each containing an exact copy of the original cell's DNA.

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фисија

에너지; 핵 에너지

The splitting of atoms that results in the release of large amounts of energy. Two or three neutrons are usually released during this event. Fission occurs either naturally or ...

mezoderm

생물; 세포생물학

The middle layer of cells in embryonic development; gives rise to muscles, bones, and structures associated with reproduction. The middle embryonic tissue layer. Cells and ...

melanin

생물; 세포생물학

A pigment that gives the skin color and protects the underlying layers against damage by ultraviolet light; produced by melanocytes in the inner layer of the epidermis.

mejoza

생물; 세포생물학

Cell division in which the chromosomes replicate, followed by two nuclear divisions. Each of the resulting gametes (in animals, spores in plants) receives a haploid set of ...

megaspore

생물; 세포생물학

Four haploid cells produced by meiosis in the ovule of a þower. Usually, three of these cells degenerate, with the remaining cell becoming the female gametophyte phase of the ...

moždina

생물; 세포생물학

1. A term referring to the central portion of certain organs; e. G. , the medulla oblongata of the brain and the adrenal medulla, which synthesizes epinephrine and norepinephrine. ...

makroevolucija

생물; 세포생물학

The combination of events associated with the origin, diversification, extinction, and interactions of organisms which produced the species that currently inhabit the Earth. Large ...

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Ускрс

An annual Christian festival in commemoration of the resurrection of Jesus Christ, observed on the first Sunday after the first full moon after the ...