Karyotypes can be used to identify mutations in different forms of cancer, as you have seen in the HeLa and Philadelphia karyotypes. However, they are also useful in detecting other genetic abnormalities, such as Down syndrome (Trisomy 21). What would a karyotype of an individual with Down syndrome look like and what information would that provide to a geneticist?

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes