Saint Bernards and Chihuahuas (two breeds of domestic dogs) cannot mate normally owing to great difference in size. Thus they ar e reproductively isolated to some extent. What type of isolating mechanism is operating here? * o developmental O postzygotic prezygotic O geographic
1 answer:
Answer:
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Explanation:
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The answer is:
E. They lack a plasma membrane.
The reason is that the plasma membrane is actually a very important part of their cell. Hope that helps! :)