Karyotypes

Front

What is a karyotype?

Back

A karyotype is a visual representation of an individual's complete set of chromosomes, organized and displayed in pairs by size and shape.

Front

What is nondisjunction?

Back

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division, leading to an abnormal number of chromosomes.

Front

What is trisomy?

Back

Trisomy is a genetic condition where an individual has three copies of a particular chromosome instead of the usual two.

Front

What is monosomy?

Back

Monosomy is a genetic condition where an individual has only one copy of a particular chromosome instead of the usual two.

Front

What is triploidy?

Back

Triploidy is a genetic condition where an individual has three complete sets of chromosomes, resulting in a total of 69 chromosomes.

Front

What chromosomal abnormality is associated with Down syndrome?

Back

Down syndrome is typically caused by trisomy 21, where there are three copies of chromosome 21.

Front

How can you identify a biological female in a karyotype?

Back

A biological female typically has two X chromosomes (XX) in their karyotype.

Front

How can you identify a biological male in a karyotype?

Back

A biological male typically has one X and one Y chromosome (XY) in their karyotype.

Front

What is the significance of chromosome 18 in Edwards syndrome?

Back

Edwards syndrome is characterized by the presence of an extra chromosome 18, leading to trisomy 18.

Front

What is the total number of chromosomes in a typical human karyotype?

Back

A typical human karyotype contains 46 chromosomes, arranged in 23 pairs.