Answer:
In most species of frogs, fertilization is external. The male frog grabs the female's back and fertilizes the eggs as the female frog releases them (Figure 2.2B). ... The egg pronucleus and the sperm pronucleus will meet in the egg cytoplasm to form the diploid zygotic nucleus.
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Answer:
the branch of biology and medicine concerned with the study of embryos and their development.
Explanation:
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Answer:
The balanced equarion is
4Fe + 3O2-------> 2(Fe2O3).
Explanation: