When a gamete that is lacking a sex chromosome due to nondisjunction has fused with a gamete carrying an X chromosome, this type of abnormality leads to ________.
A. Klinefelter Syndrome
B. Triple X syndrome
C. Turner syndrome
D. Down Syndrome
E. Edward Syndrome
Answer: C
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Within insects, the main evolutionary dividing line is between those that
A. fly and those that do not fly. B. have lost wings that were present in their common ancestor and those that still fly. C. shed their wings as they molt and those that do not. D. undergo metamorphosis and those that don't. E. have eggshells and those that don't.
What is the main cause of cancer?
A. DNA replication no longer working properly B. Old age, during which the cells of the body no longer work properly C. Exposure to carcinogens in the environment D. We do not currently know the main cause of cancer.
A falling object gains 10m/s each second it falls, its acceleration is
What will be an ideal response?
Without data from the base composition studies of Chargaff, what might Watson and Crick's modeling studies have erroneously concluded?
A. Bases could pair with themselves (e.g., A with A, C with C). B. Any purine could pair with any purine. C. Any purine could pair with any purine and any pyrimidine could pair with any pyrimidine. D. Any purine could pair with any pyrimidine. E. Any pyrimidine could pair with any pyrimidine.