In some chordates, pharyngeal slits develop into choose one answer.
a. gills.
b. vertebrae.
c. blood vessels.
d. fins.

the organisms are not adapted to live in some communities or habitats.

segmentation=endoskeleton=backbone=coelom=tissues

c should be the answer

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set