transformacija

transformacija

In GrifÞth's experiments with strains of pneumonia bacterium, the process by which hereditary information passed from dead cells of one strain into cells of another strain, causing them to take on the characteristic virulence of the Þrst strain.

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类别细胞生物学
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nejednaka transformacija

数学; 代数

Transformacija čiji je rezultat jednačina koja nije jednaka originalu.

složena transformacija

数学; 几何学

Veza između prve transformacije s i druge transformacije t je preslikavanje u tčcku p takvu da je t(s(p)) Ako piše t2 t1, uraditi prvi t1; videti pod translacija, rotacije, ...

mezoderm

生物学; 细胞生物学

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

生物学; 细胞生物学

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

生物学; 细胞生物学

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

生物学; 细胞生物学

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

生物学; 细胞生物学

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

生物学; 细胞生物学

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