Question

when does crossing over occur?

prophase i

metaphase i

anaphase i

telophase i

prophase ii

metaphase ii

anaphase ii

telophase ii

what type of mutation is seen below?

Explanation:

Crossing - over is a key event in meiosis. In meiosis I, during prophase I, homologous chromosomes pair up (synapsis). At this stage, non - sister chromatids of homologous chromosomes exchange genetic material, which is called crossing - over. This process increases genetic diversity. In metaphase I, homologous chromosomes align at the equatorial plate. In anaphase I, homologous chromosomes separate. In telophase I, the cell divides into two daughter cells. In meiosis II (prophase II, metaphase II, anaphase II, telophase II), the events are more similar to mitosis (such as sister chromatid separation in anaphase II) and do not involve crossing - over.

Answer:

prophase I