Question

comparison between phase contrast microscope and florescent microscope.

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Answer 1

Answer:

With brightfield micros- copy, fluorescent stained cells appear unstained, show- ing very little contrast. Phase-contrast microscopy, on the other hand, gives high contrast images of un- stained cells and should be more useful for autofocus.

Explanation:

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Answer 2

Answer:

Although life is a continuous process, fertilization is a critical landmark because, under ordinary circumstances, a new, genetically distinct human organism is thereby formed.... The combination of 23 chromosomes present in each pronucleus results in 46 chromosomes in the zygote.

Explanation:

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