karyotype photo

 In grade 12 Biology we studied the structure of chromosomes and how they can be aligned into homologous pairs based on their size, banding pattern and position of the centromere (karyotyping).

Alligning the homologous pairs to form a karyogram then allows us to determine the sex of the individual the chromosomes came from and look for any chromosomal abnormalities like 3 copies of chromosome 21 (Trisomy 21) which is the cause of Downs Syndrome.

The students modeled the process of karyotyping by using an online simulation and a “technical” cut and stick activity.

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