Trisomy 16: a condition caused when a zygote receives three copies of chromosome 16 Huntington's disease: a condition caused when a zygote receives a mutated dominant allele Hemophilia: a condition caused when a zygote receives an X chromosome with a particular recessive allele Sickle cell anemia: a condition caused when a zygote receives a recessive allele for hemoglobin from each parent
I gave my students this multiple choice question: Which of the following genetic conditions results from a problem with segregation?

Only one answer is correct among these 4 choices:
- Trisomy 16: a condition caused when a zygote receives three copies of chromosome 16
- Huntington's disease: a condition caused when a zygote receives a mutated dominant allele
- Hemophilia: a condition caused when a zygote receives an X chromosome with a particular recessive allele
- Sickle cell anemia: a condition caused when a zygote receives a recessive allele for hemoglobin from each parent

Could you tell me which one is correct?

Trisomy 16: a condition caused when a zygote receives three copies of chromosome 16