URGENT!!

Which method do scientists use to confirm that crossing over occurs? (1 point)

(A): cloning

(B): dihybrid crosses

(C): gel electrophoresis

(D): genetic engineering

Spherical shaped cell might increase the surface area and decrease the volume.

I'm sorry to hear that. i will try to answer your other questions if it is within my ability. : )answers: my favourite colour is black.my favourite food is pasta.my favourite school subject is english, but i do also like lunch time.my least favourite subject is history as well as geography. i have currently garnered a quite equal hatred for both of the subjects.what about you? well, you for the points. : )