Karyotypes and Pedigrees

Front

What are karyotypes?

Back

Karyotypes are the number and appearance of chromosomes in the nucleus of a eukaryotic cell, used to study chromosomal abnormalities.

Front

What is the typical sex chromosome configuration for a human male?

Back

XY

Front

What is a polyploid organism?

Back

A polyploid organism has more than two complete sets of chromosomes (more than 2n).

Front

What chromosomal condition is characterized by an extra chromosome 21?

Back

Down Syndrome.

Front

What does a shaded individual in a pedigree represent?

Back

A shaded individual typically represents an affected individual with a recessive trait.

Front

What is the typical sex chromosome configuration for a human female?

Back

XX

Front

What is Turner Syndrome?

Back

Turner Syndrome is a condition where a female is partly or completely missing an X chromosome.

Front

What is Klinefelter Syndrome?

Back

Klinefelter Syndrome is a condition in males characterized by an extra X chromosome (XXY).

Front

How can you determine if a trait is dominant or recessive using a pedigree?

Back

If the trait skips generations, it is likely recessive; if it appears in every generation, it is likely dominant.

Front

What is trisomy?

Back

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