Biology - Cell division

STUDY

Three reasons why cells divide

They grow too large, repair of tissue, replication/reproduction

Is the genetic information of the mother the same as the daughter in mitosis

Yes, the genetic information of the mother is the same as the daughter in mitosis.

Three reasons why cells divide

They grow too large, repair of tissue, replication/reproduction

Is the genetic information of the mother the same as the daughter in mitosis

Yes, the genetic information of the mother is the same as the daughter in mitosis.

In mitosis do you produce daughter cells that are identical or genetically different from the mother cells?

Identical

Chromatin

loosely packed genetic information

Chromosomes

Tightly packed genetic information

Chromatids

Each strand of DNA in a doubled chromosomes

Why does chromatin condense into chromosomes during cell division? How does this help with ensuring the genetic material gets to the new daughter cells.

Chromatin condenses into chromosomes to make the genetic info easier to transfer and be distributed accurately to the new daughter cells.

If an organism has 8 chromosomes, how many will each daughter cell have after mitosis? Why?

Each daughter cell will have 8 chromosomes because the parent replicates it’s chromosomes and evenly distributed them between each daughter cell.

Is mitosis an example of sexual or asexual reproduction?

Asexual

Interphase

Mitosis and Cytokinesis make up this phase of the cell cycle (cell grows, replicates its DNA, and prepares for division longest phase)

Prophase

Nuclear membrane breaks up, centrioles migrate to poles and make spindle fibers which begin to attach to the chromosomes

Metaphase

Chromosomes line up in the middle of the cell at the “equator” with help from the spindle fibers attached at the centromeres

Anaphase

Chromatids are pulled apart toward the “poles” of thee cell with spindle fibers attached at the centromeres

Telophase

Chromosomes at “poles” of cell, nuclear membrane reforms, spindle fibers disappear

Cytokinesis

Splitting of the cytoplasm (plant cells form a cell plate which turns into a cell wall, while animal cells split by pinching)

G1

Much cell growth takes place and organelles are replicated

DNA synthesis

chromosomes are replicated and make 2 exact copies, one for each future daughter cell (sister chromatids are formed)

G2

centrioles replicate and cell makes final prep to divide

M-phase

Mitosis and Cytokinesis make up this phase of the cell cycle