Cell division begins when chromosomal DNA replicates and each ...

[darbym82]

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.

[eliasc0401]

Answer to Question 1

b

Answer to Question 2

c

[darbym82]

Excellent

[Mochi]

Gracias!