Nondisjunction of chromosome#21 in which of the following (1-7) could result in a fetus/childwith trisomy 21 (47,XX+21) or (47,XY+21)? To indicate your choices,type an “R†at the end of each RIGHT choice, and a “W†at the endof each WRONG choice.
I. Anaphase 1 in spermatogenesis
II. Anaphase 2 in spermatogenesis
III. Anaphase 1 in oogenesis
IV. Anaphase 2 in oogenesis
V. The first anaphase of a normalzygote.
VI. The anaphase in one of the 2 cellsproduced from the first normal division of a normal zygote.
VII. The anaphase in one of the 4cells produced from the first normal division of a normalzygote.
