Activity : Chromosomes during Cell Division Our problem today.... Differents parts of our body regenerate thanks to the production of new cells. During cell regeneration there is no loss of genetic information, so that all the cells of our body contain exactly the same genetic information. How is it ?
To do list : Using the following documents, you have to describe the evolution of the DNA quantity before the cell division and what happens to the double chromosomes during the cell division.
One parent cell
46 chromosomes
Two identical daughter cells
46 chromosomes
46 chromosomes
The two branches of chromosomes are stricty identical One arm of chromosome Its sister
Doc 1Â : DNA quantity in cell during a cell-cycle (=growth and division)
Doc 2Â : Condensed chromosomes at the second stage of cell division
Doc 3 : microscopic pictures of the cell division stages and video of the cell division a) A cell at first stage of division : chromosomes condensate and become visible
b) A cell at second stage of division : 8 double chromosomes are visible
Some vocabulary: click on the link down Interactive exercice: match the expressions with their equivalents
ENGLISH
FRENCH
Chromosome DNA Regarding the chromosome level Cell division Daughter cells Set of chromosomes Condensed chromosomes « arm » of chromosome Microscopic pictures Stage To split into Regeneration
c) A cell at third stage of division : d) A cell at the last stage of division : 2 sets of 8 simple chromosomes cytoplasms are dividing are separated
http://LearningApps.org/watch?v=pjzejxza201