CHROMOSOMES ANOMALIES By: renata diaz
Normally, humans cells contain 23 pairs of chromosomes, down syndrome occurs when an individual has an extra copy of chromosome 21. The cause of that extra full or partial chromosome is unknown. Down syndrome occurs as a random event dusing the cell division in the early fetal development. Maternal age is the only factor that has been linked to the possibilities of having a baby with down syndrome, most of the moms of this babies were under 35 years old when they had them. Down syndrome occurs
Is a chromosomal condition which affect the physical and reasoning male development. This syndrome typically occurs when the genetic material on the egg splits unevenly causing the presence of an extra X chromosomes on males. This chromosomal change occur as random events during the formation of the reproductive cells (sperm and egg).
We all suppose to have sex chromosomes, people with turner syndrome only have one sex chromosome. This syndrome causes problems and medical issues such as short height, heart defects, infertility and learning disabilities. Turner syndrome is a condition developed when an X chromosome is missing, the condition is caused by nondisjunction which happens when a pair of X chromosomes doesn't separate during the formation of the sperm. Turner syndrome only affect women.