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Number of chromosomes in a human
46 chromosomes and 23 pairs
homologous chromosomes
chromosomes in a pair that contain gene coding for the same trait
non sex chromosomes
22 pairs called autosomes
sex chromosomes
23rd pair determine biological sex
karyotype
image of a persons chromosomes to determine the number and appearance
aneuploidy
the condition of missing or having an extra chromosome
when does aneuploidy occur
when sister chromatids fail to separate during cell division (non- disjunction)
mitosis
the process of one cell splitting into two new identical cells, allowing for growth and development or repair and replacement
meiosis
type of cell division that reduced the chromosome number by half, resulting in the formation of 4 unique daughter cells. This is essential for reproduction
Note 
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