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- What is crossing over, when does it occur, and what is its significance?Consider and individual with 3 pairs of homologous chromosomes labeled as: A/a B/b D/d(where the slash line separates one chromosome from its homologues). How many differentmeiotic products (sperm or egg) can this individual produce? What are these?Why are people with balanced chromosomal translocations phenotypically normal? Do they suffer from reduced fertility? Why?
- In meiosis, after telophase I, do other cells (comparing one another) have the same combination of genes in each cell? Is it necessary for them to be the same?When is the only time crossing over can occur?If the blue F1 females in are backcrossed to the blue males in the P generation, what phenotypes and proportions of offspring will be produced?