A. Subject Name: Mitosis
B. Lesson Reference: Lesson 47
C. Lesson Title: Mitosis
D. Lesson Description:
Cell division is an elegant process that enables organisms to grow and reproduce. Through a sequence of steps, the replicated genetic material in a parent cell is equally distributed to two daughter cells. While there are some subtle differences, mitosis is remarkably similar across organisms.
Before a dividing cell enters mitosis, it undergoes a period of growth called interphase. Interphase is the "holding" stage or the stage between two successive cell divisions. In this stage, the cell replicates its genetic material and organelles in preparation for division.
E. Learning Output
E1. Identify the stages of mitosis.
E2. Describe the events occur in each stage of mitosis.
E3. Illustrate the stages of mitosis.
F. Review of Previous Learning/Lesson
The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells. These processes define the two major phases of the cell cycle. DNA duplication occurs during S phase (S for synthesis), which requires 10–12 hours and occupies about half of the cell-cycle time in a typical mammalian cell. After S phase, chromosome segregation and cell division occur in M phase (M for mitosis), which requires much less time (less than an hour in a mammalian cell). M phase involves a series of dramatic events that begin with nuclear division, or mitosis.
G. Learning Presentation
Refer to the two videos below for the lecture on Mitosis.
H. Learning Activity
Refer to the link:
http://bio.rutgers.edu/~gb101/lab2_mitosis/section1_frames.html
I. Learning Evaluation
Refer to this link : http://quizstar.4teachers.org/index.jsp
