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Travka [436]
3 years ago
12

Why are metaphase chromosomes always used in the preparation of karyotypes

Biology
1 answer:
S_A_V [24]3 years ago
7 0

Answer:D. This is the only cell cycle phase when the chromosomes are unduplicated

Explanation:

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Ammonia is the most toxic of these nitrogenous wastes, and it is the most common but requires the least energy. Urea is more harmful than uric acid, but it is less harmful than ammonia, reducing the amount of energy required to synthesize it. Uric acid is the least harmful, a non-poisonous particle with four nitrogen molecules. This is useful for birds and reptiles that lay hard eggs because it eliminates the most nitrogen, uses the least amount of water, and is not toxic. It also takes the most energy input.

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