why is the longer chromosome pair used to model crossing over?

Using the longer chromosomal pair when modeling crossing-over helps the observer's see the pattern in a spread-out example.

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jamuuj jamuuj · Answer 2 · 2018-12-03T11:37:15+01:00

Answer;

The reason is because using a longer chromosome pair would help the learner to see the pattern in the spread out

Explanation;

Cross-over is the process that takes place in meiosis process of cell division, where a cell in the gonads divides in two phases to yield four daughter cells that have half the genetic composition as the parent cell.
Cross-over occurs in prophase I of meiosis I, where non-sister chromatids of the homologous chromosomes joins at a point called chiasmata and exchanges the segment of chromatids, this ensures genetic variation among organism.
Using longer chromosome to show the model of cross-over ensures that the pattern in the spread out is clearly visible to the learner.