Mitosis and Meiosis Flashcards
The life story of the cell: the stages through which it passes from one division to the next.
Cell Cycle
It is through the _____ that the genetic instructions for all characteristics are passed from parent cell to daughter cells.
Cell cycle
Where in the cell cycle ensure that all cellular components are present and in good working order, and they are necessary to prevent cells with damaged or missing chromosomes from proliferating.
Checkpoints
The period between cell divisions, in which the cell grows, develops, and functions
Interphase
The period of active cell division
M phase (Mitotic phase)
What are the Three Phases of Interphase
G1 (Gap 1)
S phase
G2 (Gap 2)
What are the six stages of M Phase of Mitosis? In chronological order
- Prophase
- Prometaphase
- Metaphase
- Anaphase
- Telophase
- Cytokinesis
In what stages the chromosomes condensed. Each chomosomes posseses two chromatids and the mitotic spindle forms. ( 4 chromosomes, 8 DNA molecules)
Prophase
The nuclear membrane disintegrates. (4 chromosomes, 8 DNA molecules)
Prometaphase
Chromosomes line up on to metaphase plate. (4 chromosomes, 8 DNA molecules)
Metaphase
Sister chromatids separate and move towards different poles. ( 8 chromosomes, 8 DNA molecules)
Anaphase
Chromosomes arrive at spindle poles. The nuclear membrane re-forms and the chromosomes relax. ( 4 chromosomes, 4 DNA molecules)
Telophase
True or False. Mitosis consist of a double nuclear division while Meiosis consist of one division
FALSE. Mitosis consist of “single” nuclear division while Meiosis consist of “two” divisions
True or False. Meiosis chromosomes number in the newly formed cells is the same as that in the original cell.
FALSE. “MITOSIS’ chromosomes number in the newly formed cells is the same as that in the original cell.
True or False. “Meiosis” causes chromosomes number in the newly formed cells to be “reduced by half”
TRUE
True or False. Mitosis produces ‘genetically identical cell” while Meiosis produces “genetically variable cells”
SO TRUEEE
True or False. Mitosis consist of two distinct processes; Mitosis I and Mitosis II
FALSE. “Meiosis” has two processes
What is the total number of chromosome and DNA molecules of a cell occuring in a Meiosis cycle with 18 chromosomes at Prophase I
KAYA MO YAN
A process in which homologous chromosomes exchange genetic information
Crossing Over
Each location where two chromosomes cross
Chiasma (plural. chiasmata)
The period between meiosis I and meiosis II, called ______, the nuclear membrane re-forms around the chromosomes clustered at each pole, the spindle breaks down, and the chromosomes relax.
Interkinesis
Phase of Meiosis I that chromosomes begin to condense and the spindle forms
Middle Prophase I
Phase of Meiosis 1 that homologous chromosomes pair
Late Prophase I
Phase of Meiosis I that crossing over takes place and the nuclear membrane breaks down
Late Prophase I
