| Text | Karyotyping what does it do: shows the chromosomes of an organism in homologous pairs of decreasing length process: -Harvesting cells (usually from a foetus or white blood cells of adults) -Chemically inducing cell division, then arresting mitosis while the chromosomes are condensed -The stage during which mitosis is halted will determine whether chromosomes appear with sister chromatids or not Will occur prenatally to test for gender or chromosomal abnormalities |
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| Extra | Trisomy 21 - down syndrome, due to non-disjunction in one of the parental gametes, causes mental and physical delays in child's development |
Tags: 3_2_chromosomes, down_syndrome
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