Question 1
What is the role of the centromere during cell division?
◦ Hold together the DNA of a single chromatid.
◦ Attach one sister chromatid to another sister chromatid.
◦ Attach two chromosomes to each other.
◦ Serve as the initiation site for DNA synthesis.
Question 2
Which dosage compensation mechanism is employed by female placental mammals?
◦ synteny
◦ Y-inactivation
◦ X-inactivation
◦ X nondisjunction
◦ X chromosome crossing over