A diplóid čéll čontains three pairs of homologous chromosomes designated C1 and. C2, M1 and M2, and S1 and S2; no ·crossing over occurs. What possible combinations of chromosomes will be present in

If nondisjunction takes place in a spermatocyte in the second meiotic division and the sperm fertilizes a normal egg, the resulting infant may have three copies of each chromosome three copies of chromosome 13,18 or 21 three copies of chromosome 13,18, 21 or a normal number of chromosomes a normal number of chromosomes one copy of each chromosome

A diploid species has four chromosomes per set for a total of eightchromosomes in its somatic cells. Draw such a cell as it wouldlook in late prophase of meiosis II and prophase of mitosis. Discuss how prophase of meiosis II and prophase of mitosis differfrom each other, and explain how the difference originates.

6) The plant Haplepoppus gracilis is diploid (2n = 4). Inside each cell (represented here by the oval) there are four total chromosomes: one long pair (represented by "A" and "a") and one short pair (represented by "B" and “b"). The following diagrams represent possible anaphases of this cell during meiosis or mitosis. The lines represent chromosomes/chromatids being pulled to either the north or south pole of the cell, and the vertex of each "V" represent the centromere which would be attached to kinetochore microtubules. For representative cells 1– 12, say if the diagram represents a cell in anaphase I of meiosis I, anaphase II of meiosis II, anaphase of mitosis, or shows an impossible situation. If the situation is impossible, explain why. い。 VA Vb VA VB VV. V b Va VB VAVA Vo VB ^^ ^ が VaVA Vo VB くs