Cell Division Flashcards
2 Types of cell division
Somatic cell division
Reproductive cell division
How many chromosomes are there in a somatic cell division?
46 chromosomes, 23 pairs
Any precursor cell destined to be a gamete
Somatic cell division
Other term for a gamete
Germ cell
The germ cell/ gamete is composed of what?
Sperm cell and egg cell
The gamete/ egrm cell undergoes what processes?
Mitosis and Cytokinesis
Other term for mitosis
Nuclear division
Other term for cytokinesis
Cytoplasmic division
What does the somatic cell division produce?
2 identical cells (same number and kind of chromosomes as the original cells)
Replaces dead or injured tissue cells and add new ones during tissue growth
Somatic cell division
The period between cell divisions
Interphase
Resting phase of the cell (?)
Interphase
What happens during Interphase?
Interphase is when the cell is not dividing, yet undergoes most of the growing. There is a high state of metabolic activity, and replication of DNA occurs *S Phase)
Phases of Interphase
- G1 Phase
- Synthesis (S) Phase
- G2 Phase
Phase of the cell sensitive to radiation
Radiosensitive
Interphase that is/are radiosensitive
G1 & G2 Phase
Phase that has enough energy to counter radiation
Radioresistant
Interphase that is radioresistant (?)
S Phase
Known to be the relaxed phase
G Phases
Phase where there is no activity of DNA Replication
G Phases; DNA Replication is in the S Phase
Known to build gap/interruptions
G Phases
How many sets of chromosomes are created in Mitosis and Meiosis?
Mitosis: 2 sets (Diploid)
Meisosis: 4 sets (Haploid)
What happens during Mitosis?
Parent cell produces identical cells, chromosomes become visible under light microscope, and 2 sets of chromosomes are distributed into a separate nuclei