Understanding Karyotypes and Chromatids

The video addresses a common question about karyotypes: how many chromatids per chromosome are present? It explains that karyotypes are typically taken at or before metaphase, where chromosomes have two sister chromatids. The video clarifies that while chromatids may appear different in images, each chromosome in a karyotype technically has two sister chromatids.

What does a karyotype display?

• An individual's genes

• An individual's chromosomes

• An individual's proteins

• An individual's cells

Why might karyotypes appear different in diagrams?

• They are represented at different stages of mitosis

• They are drawn by different artists

• They are taken from different individuals

• They are taken at different times of the day

At which stage of mitosis is a typical karyotype taken for optimal viewing?

• Anaphase

• Telophase

• Metaphase

• Prophase

How many chromatids does each chromosome have during metaphase?

• One

• Two

• Three

• Four

Why might it be difficult to see the chromatids in a karyotype?

• They are not present

• They are too small

• They are too close together

• They are too far apart