Heredity - Genetics: The Human Genome - Karyotypes

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4. The Human Genome - Karyotypes

How do we know about our DNA?

Scientists can isolate an individual's chromosomes, stain them with dye and lay them out in what is called a Karyotype.

. (Video explanation) By comparing Karypotypes, scientists are able to determine if a person has a complete set of chromosomes, if any are missing or duplicated, or if parts are missing.

Normal Female karyotype showing 2 X's

and 46 chromosomes total

Normal Male karyotype showing X and Y

and 46 chromosomes total

Try the karyotype activity here.