Blood i think. Is the question multiple choice?
Hope this helps
Hi there!
A prezygotic isolating mechanism is a mechanism that causes something to happen, not allowing the organisms to breed before fertilization. I'll explain each one for you.
A - That is postzygotic because the organisms were not stopped before fertilization. The result is a sterile organism.
B - Again, that is postzygotic because the organism was produced.
C - This is prezygotic! The sperm dying shows that something is in action to prevent fertilization, meaning that it cannot happen.
D - Fertilization was successful, so it is postzygotic.
ANSWER:
C - the sperm dies when it reaches the female tract
If you need help with any more problems, feel free to message me and I'd be more than happy to help you work through them and provide explanations.
Hope this helps!! :)
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Answer:
2) glycogen...................
Answer:
"Chlorine" is the element which is likely to gain electrons in a chemical bond.
Explanation:
In chlorine there are seven electrons in the valence shell, it requires one more electron so that it will become full valence and the electron will achieve the stability. For chlorine it will be easier to gain one electron and become stable than to loss all the seven electrons present in it to become stable. Also the non metals gain electrons and becomes negatively charged ions later known as the anions.