Give two examples of what would occur if one pairs of chromosomes did not match or had an extra chromosomes? And if it would be dangerous?

1) downs syndrome

2) Patau syndrome

can lead to serious eye, brain, circulatory defects as well as cleft palate. 1:5000 live births. Children rarely live more than a few months.

Down syndrome is one of the most common outcomes when this gene mutation occurs. This disorder can cause learning disabilities, distinct facial appearance and in some cases thyroid and heart disease.