Question

1. TW8 identical diploid cells undergo mitosis (let's call them coll A and cell B). Do we expect the cells produced by Bitosis of cell and cell B to be genetically identical? Why or why not? Yes, llu daughter cells of buiti A B are identical -daughtecelts, botto Pareitt fell i 18. Two identical diploid cells undergo meiosis (let's call them cell A and cell B). Do we expect the cells produced by meiosis of cell and cell B to be genetically identical? Why or why not? tu cell 19. A diploid cell with two harmful mutations in different genes undergoes mitosis. How many total mutations do we expect the descendent cells to have? 20. A diploid cell with two harmful mutations in different genes undergoes meiosis. How many total mutations do we expect the descendent cells to have? 21. Two of the four meiotic products of the meiosis (above) undergo fusion. How many mutations do we expect the resulting diploid cell to have?

Answer 1

17) mitosis is the equational division, both the parent cell and the daughter cells have the same chromosomes and the chromosome number of both parent cell and daughter cells are the same.

here A and B are genetically identical so the daughter cells produced by the mitosis are also genetically identical to each other.

( daughter cells are genetically identical to the parent cells since the parent cells are genetically identical the daughter cells are genetically identical to each other).

18) No.meiosis is reduction division, the diploid cells undergo meiosis to produce haploid daughter cells.

during meiosis, recombination occurs between the non-sister chromatids of the homologous chromosomes and the chromosomes assort independently of each other so the daughter cell ( gametes ) can get any copy of each chromosome.

because of the independent assortment of the chromosomes and the crossing over between the non-sister chromatids each gamete produced are unique.

so even if the parent cells are genetically identical the daughter cells produced by meiosis need not be identical.