What are homologous chromosomes?
Homologous chromosomes are "twin" chromosomes. They are the same size and contain the same genetic information. One comes from Mom, the other from Dad.
True or False: Cytokinesis is different between plant and animal cells.
True. Plant cells need to make a new cell wall between them while animals cells don't.
In which stage of the cell cycle do eukaryotic cells often spend about 90% of their time.
Interphase
How is DNA arranged during Interphase?
The intact nucleus is filled with loose, extended homologous chromosomes that are piled on top of each other as chromatin.
What is the phase of the cell cycle when "hot dog" shaped chromosomes first become visible and the centriols migrate to opposite ends of the cell?
Prophase
In order to prepare for cell division, DNA becomes more compact by ______________.
wrapping tightly around histone proteins
At the beginning of mitosis (Interphase, Prophase, Metaphase) a chromosome consists of two _________________.
sister chromatids
In plant cells, cytokinesis occurs when _______________________.
a new cell wall forms between the newly formed daughter cells
As chromosomes become more visible at the beginning of mitosis, what disappears?
The nuclear membrane and nucleuolus both disappear.
Spindle fibers are created by tiny organelles called _______________.
centrioles
What is the difference between diploid cells and haploid cells?
Diploid cells have ALL of the chromosomes needed by the organism. Haploid cells have HALF the chromosomes needed by the organism.
After mitosis is complete, will the resulting daughter cells be diploid or haploid?
Mitosis should result in the daughter cells having the exact same number of chromosomes as their parent cell. Thus, they are diploid.
How many chromatids will a duplicated chromosome have?
A duplicated chromosome should have two chromatids.
TERMS of ATTACHMENT! Can you explain how spindle fibers, centromeres, and kinetochores attach and work together?
Centromeres attach chromatids together while spindle fibers attach to kinetochores.
Can you name this stage of the cell cycle?
Interphase
