In chorionic villus sampling, a catheter is used to extract tissue from the chorionic villi, which are finger-like projections of the ___.

Which of these is NOT true about amniocentesis?

Chromosome 7 may lose an end piece resulting in a disorder called Williams syndrome. This is an example of a(n):

A karyotype shows chromosomes arranged by:

When normal cells are grown in a dish, they stop dividing when they touch one another and become a one-cell-thick sheet. This property is called __ ___. Cancer cells do not display this property.

Match the descriptions of congenital disorders below with their names.

The figure below shows a cell in the mitotic stage of ___.

Bradley was examining a cell under the microscope and noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite ends of the cell. The cell he was looking at was most likely a(n):

Sickle cell anemia is caused by a mutation in the DNA of a particular gene. A person with this disease makes blood cells that lose their normal round, flat shape, and form a pointy, sickled shape. People with this disorder suffer from low energy levels, blood clots, and strokes. This is an example of:

All of the following occur during prophase EXCEPT: