1. Organismal Development Part 1
Prokaryotes and Protists

2. Asexual Reproduction

3. Sexual Reproduction

4. Asexual – Binary Fission
Cell wall
Origin of
replication
Plasma
membrane
E. coli cell
Bacterial
chromosome
Chromosome replication begins.
Soon thereafter,
one copy of the origin moves rapidly toward the other end of the cell.
Two copies
of origin
Origin
Origin
Replication continues. One copy of the origin is now at each end of the cell.
Replication finishes.
The plasma membrane grows inward, and
new cell wall is deposited.
Two daughter
cells result.

5. Asexual - Budding

6. Platyhelminthes - Regeneration

7. Asexual – Binary Fission
Cell wall
Origin of
replication
Plasma
membrane
E. coli cell
Bacterial
chromosome
Chromosome replication begins.
Soon thereafter,
one copy of the origin moves rapidly toward the other end of the cell.
Two copies
of origin
Origin
Origin
Replication continues. One copy of the origin is now at each end of the cell.
Replication finishes.
The plasma membrane grows inward, and
new cell wall is deposited.
Two daughter
cells result.

8. Transformation

9. Bacterial Transduction
Phage DNA A+ B+ A+ B+
Donor
cell A+
Crossing
over A+ A– B–
Recipient
cell A+ B–
Recombinant cell

10. Conjugation in Bacteria
Sex pilus
5 µm

11. Sexual Reproduction

12. Cell Cycle with checkpoints (Is all going according to plan?)

13. G2 followed by Mitosis

14. Mitosis continued followed by cytokinesis