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irina [24]
2 years ago
7

Which of the following events occurred during the first trimester?

Biology
1 answer:
klasskru [66]2 years ago
5 0
I believe that the answer to your question would be A. Heart Begins.
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If you flip a penny 99 times and each time it came up heads then the chance of the penny coming up heads is ___
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There are 1 out of 2 chances of it occurring or 1/2. Divide that and multiply it by 100% to get the probability in percent. So the answer will be 50%.

The answer is B.
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The correct answer will be option-A.

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In the given question since four bases when read from the forward direction is same as reading the sequence from the backward direction like CGAC can be read the same both backward and forward.

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