Classification. Referring to mammalian reproduction, answer the questions using the five items listed below.
I. | sperm |
II. | mature ova |
III. | primary oocytes |
IV. | primary spermatocytes |
V. | zygotes |
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During fertilization which two items combine to form a fertilized egg?
a. | I and II |
b. | I and III |
c. | I and IV |
d. | II and IV |
e. | III and IV |
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