Cell division begins when chromosomal DNA replicates and each chromosome becomes a pair of:
a. nuclei
b. sister chromatids
c. mother chromatids
d. eukaryotes
Question 2
Russian archaeologist S.A. Semenov studied the wear pattern on prehistoric scrapers and found that:
a. all tools were constructed by the same individual.
b. all tools were constructed by left-handed individuals.
c. virtually all tools were constructed by right-handed individuals.
d. almost every tool was devoid of any kind of meaningful wear pattern.
e. all tools were used as decorative objects.