B: during the early stages of meiosis, chromosomes in a homologous pair exchange segments, the process is called Crossing over.
Um, a family is composed of people?
The medulla oblongata<span> helps regulate breathing, heart and blood vessel </span>function<span>, digestion, sneezing, and swallowing. </span>
Protist<span> manufacture their own energy by photosynthesis (using sunlight)</span>
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Answer: External segments are called metameres and internally, septa, or dividing walls, are located between the segments.
Explanation: I think it is
