Chromosomes Autosomes – these are the 44 chromosomes containing similar types of information in cells of both males & females Sex chromosomes – these are 2 of the 46 chromosomes that look like an XX for females and XY for males
Microtubules Microtubules form the Spindle Apparatus which is the “machinery” responsible for moving chromosomes during cell division
Note the pink spindle apparatus moving the chromosomes
Chromosome numbers Diploid = 2n 23 chromosomes that you received from your mother plus 23 chromosomes you received from your father 2 sets of chromosomes Seen in somatic cells (body cells other than egg and sperm)
Meiosis This cell division occurs in the gonads (ovaries and testes) Resulting cells are the egg and sperm each with 23 chromosomes Chromosome numbers are cut in half from 46 to 23 Diploid (2n) to Haploid (n)
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