Chromosomal Abnormalities By: Ethan Larrimore

Down Syndrome: Down Syndrome is a genetic chromosome 21 disorder that causes development and mental delays.

Why it occurs: People who get an unbalanced translocation like a chromosome 21, may have extra genetic elements from the chromosome 21 which causes this.

How it occurs: it occurs when it has an error in cell division called nondisjunction.

Who does it occur to?: It occurs to people who are born with an unbalanced translocation.

Klinefelter Syndrome: A genetic condition in when a male is born with an extra copy of the X chromosome.

Why it occurs: these occur as random events during the formation of reproductive cells from the parent.

How it occurs: it occurs as random during the formation of reproductive cells.

Who does it occur to? It happens to people when the genetic material in the egg splits unevenly.

Turner Syndrome: Turner syndrome is a chromosomal disorder in when a female is born with only one X chromosome.

Why it occurs: it occurs at a random during cell division in early fetal development.

How it occurs: it occurs at a random during cell division in early fetal development.

Who does it occur to? An affected person's cells have the usual two sex chromosomes and other cells have only one copy of the X chromosome.

Color Blindness: A lessened ability to tell the difference between certain colors.

Why it occurs: This is usually a genetic condition

How it occurs: The gene responsible for the condition is carried on the X chromosome. This is the reason why many more men are affected than women.

Who does it occur to? It mostly occur to men more than women

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