Which of the following statements is true of nondisjunction?
a. nondisjunction means “not coming apart.”
b. nondisjunction is caused by chromosome pairs that fail to separate correctly.
c. nondisjunction occurs when pieces of chromosomes break off and get lost.
d. both a and b are true of nondisjunction.

If the ussrs economy has remained agricultural-based rather than industrial, then a. the unemployment rate among men would have been much lower b. women would have been less in demand in the workforce c. crop productivity would have led to larger , better nourished populations d. children would not have had to leave school early to work in factories