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Ludmilka [50]
3 years ago
9

At what phase does crossover occur in

Biology
2 answers:
vesna_86 [32]3 years ago
8 0

Answer: crossing over happens in prophase 1.

Explanation: ( in Portuguese ) os cromossomas homólogos, na profase 1 da meiose, tocam-se, trocando informações sobre o ADN. A esse processo chama se crossing over.

Basile [38]3 years ago
3 0

Answer:

crossing over happens in prophase 1.

Explanation:

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The correct answer would be A. Electron transport chain.

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The electrons released by the oxidation of NADH and FADH₂ are transported by various electron carriers associated with electron transport chain. The electrons are finally accepted by oxygen to form water which is released as a byproduct.

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In developed countries , amount of food produced being increased is a positive effect of agricultural changes in the past century.

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The remaining options such as Desertification, Clearing of rainforests and contamination can be referred to as part of the negative effect of agricultural changes in the past century.

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