'A geneticist is studying the simultaneous inheritance of two factors (or traits) represented by the two letters A and B. In the cross of AABB × aabb, it will be seen that ______'.
1
the results depend on whether factors A and B lie on the same chromosome.
2
we will note that it is experimentally not possible to conduct such a complicated experiment.
3
the inheritance of one factor (A) will affect the inheritance of the other factor (B).
4
a simple mathematical formula (9 : 3 : 3: 1) can be derived to predict the outcomes.