Will reward 50 points, 5-star rating, and brainiest When a child is born with down syndrome, when did the mutation occur? A. During Mitosis B. During Meiosis C. During Translation D. Transcription

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▹ Answer

B. During Meiosis

▹ Step-by-Step Explanation

During Meiosis is when the cell division occurs, and this is generally where the mutation will be caused. Down syndrome is caused from extra material from chromosome 21. It is generally caused by having 3 copies, rather than the regular two copies it should have.

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In the electron transport chain component of cellular respiration, the reactions occur on the surface of the cristae. Since the cristae are confined within the volume of the mitochondrion, folding will allow more surface area than flat cristae.

Greater surface area for reactions to occur -> greater reaction rate -> more efficient cellular respiration.