Need

14. what process(es) result(s) in genetic variability?
a) mitosis
b) dna replication
c) random alignment in meiosis i
d) crossing over
e) both (c) and (d)

15. typically, organisms with a missing chromosome are unable to survive.
however, humans can survive without
a) a sex chromosome
b) an autosome
c) chromosome 21
d) a gamete