Karyogram vs Karyotype
To determine sex from the karyogram, examine the last pair of chromosomes
Karyotyping will typically occur prenatally and is used to:
Down syndrome is a condition whereby the individual has three copies of chromosome 21 (i.e. trisomy 21)
- A karyogram is a graphical/photograph representation of the karyotype.
- A karyotype is the characteristics of the chromosomes of an individual (number, type, shape, etc.)
To determine sex from the karyogram, examine the last pair of chromosomes
- XX = female
- XY = male
Karyotyping will typically occur prenatally and is used to:
- Determine the gender of the unborn child (via identification of the sex chromosomes)
- Test for chromosomal abnormalities (e.g. aneuploidies or translocations)
Down syndrome is a condition whereby the individual has three copies of chromosome 21 (i.e. trisomy 21)
- It is caused by a non-disjunction event in one of the parental gametes
- The extra genetic material causes mental and physical delays in the way the child develops