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Lottie Peppers

Cell Division - Mitosis and Meiosis | ASU - Ask A Biologist - 0 views

askabiologist.asu.edu/...cell-division

mitosis meiosis article video time lapse mitosis ASU AskABiologist

shared by Lottie Peppers on 05 Oct 15 - No Cached
  • Mitosis Cell DivisionMitosis is how somatic—or non-reproductive cells—divide. Somatic cells make up most of your body's tissues and organs, including skin, muscles, lungs, gut, and hair cells. Reproductive cells (like eggs) are not somatic cells.In mitosis, the important thing to remember is that the daughter cells each have the same chromosomes and DNA as the parent cell. The daughter cells from mitosis are called diploid cells. Diploid cells have two complete sets of chromosomes.  Since the daughter cells have exact copies of their parent cell's DNA, no genetic diversity is created through mitosis in normal healthy cells. 
  • Lottie Peppers on 05 Oct 15
     
    Article summarizing cell division with time lapse cell division video of 30hours pro vs eukaryotic division.
Lottie Peppers

Zebrafish Development (Phenomenon) - 0 views

ngss.nsta.org/Resource.aspx

development phenomenon cells mitosis differentiation zebrafish NGSS

shared by Lottie Peppers on 30 May 21 - No Cached
  • Lottie Peppers on 30 May 21
     
    This two-minute video provides brief background on the use of zebrafish as a model in studying animal development, before showing a time-lapse sequence of a fertilized zebrafish egg developing into a larva.  The video includes some annotations that help orient the viewer during the time-lapse sequence.  Teachers might want to mute the narration beginning at 0:42 min to avoid giving students too much information.  This phenomenon could stimulate the following driving questions: How does the zebrafish develop from one cell to the many cells that make up the larva? How do the zebrafish cells divide? How are the developing zebrafish cells similar and different from each other? If all cells in the zebrafish develop from the same original cell, then how do some cells develop differently than others? How are cell division and growth related? 
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