#Question id: 5561
#5. Developmental Biology
In sea urchins, the "fast block" and the longer lasting "slow block" to polyspermy, respectively, are ________.
#Question id: 5562
#5. Developmental Biology
In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.
#Question id: 5563
#5. Developmental Biology
In mammalian eggs, the receptors for sperm are found in the ________.
#Question id: 5564
#5. Developmental Biology
At the moment of sperm penetration, human eggs ________.
#Question id: 5687
#8. Inheritance Biology
The error in meiosis that produces a 47,XYY karyotype is best described by
#Question id: 5688
#8. Inheritance Biology
Which of the following are not cause of aneuploidy