The human karyotype

The human karyotype - by amniocentesis A thin needle is...

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The human karyotype There are 44 autosomes and 2 sex chromosomes in the human genome , for a total of 46. Karyotypes are pictures of homologous chromosomes lined up together during Metaphase I of meiosis. The chromosome micrographs are then arranged by size and pasted onto a sheet. Human chromosomal abnormalities Chromosome deletions may also be associated with other syndromes such as Wilm's tumor. Prenatal detection of chromosomal abnormalities is accomplished chiefly
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Unformatted text preview: by amniocentesis . A thin needle is inserted into the amniotic fluid surrounding the fetus (a term applied to an unborn baby after the first trimester). Cells are withdrawn have been sloughed off by the fetus, yet they are still fetal cells and can be used to determine the state of the fetal chromosomes, such as Down's Syndrome and the sex of the baby after a karyotype has been made....
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