Question 38

(Multiple Choice)

At what point in cell division is a chromosome lost so that,after fertilization with a normal gamete,the result is an embryo with 45,X?
I.an error in anaphase I
II.an error in anaphase II
III.an error of the first postfertilization mitosis
IV.an error in pairing


A)I or II only
B)II or IV only
C)III or IV only
D)I, II, or III only
E)I, II, III, or IV

Answer