00:01
Hello students, first of all in meiosis metaphase 1, at metaphase 1 the homologous chromosomes align at the metaphase plate.
00:21
So no crossing over is assumed.
00:24
Then the combinations would be first of all am, am, bm, bm, cm, cm on one side.
00:56
Secondly ap, ap, bp, bp, cp, cp on the other side.
01:17
For the part b, by meiosis that is anaphase 1.
01:35
At the end of anaphase 1, the homologous chromosomes separate and move to opposite poles.
01:43
Since no crossing over is assumed, the combinations at the poles that would be first of all one pole would have am, am, bm, bm, cm, cm and the other pole that would be having ap, ap, bp, bp and cp, cp and for the c part meiosis 2 and sperm formation.
02:49
Now each of the cells produced in meiosis 1 undergoes meiosis 2.
02:55
In this case there is no further recombination.
02:59
So at anaphase 2, the chromatids separate and in one am, bm, cm one side and at the other side ap, bp, cp.
03:30
At the end of the telophase 2, each cell will have one chromosome at each type...