Transcript
AAn organized organized picture picture of the chromosomes of a human arranged arranged in pairs by size in pairs by size from largest to smallest.
PPairs 1-221-22 called AUTOSOMESAUTOSOMES
LLast pair are SEX SEX CHROMOSOMESCHROMOSOMES
2
Male - XYMale - XY
NondisjunctionNondisjunctionChromosomes may fail to separate during meiosis
Resulting gametes may have too few or too many chromosomes
Disorders:Down Syndrome – three 21st chromosomes
Turner Syndrome – single X chromosomeKlinefelter’s Syndrome – XXY chromosomes
3copyright cmassengale