A gene mutation can occur because of environmental factors. If a person is exposed to UV lights it can cause a mutation to happen
0% is ur answer lol okay you
The answer is <span>C. A hormone produced in the pancreas that regulates the level of glucose in the blood.
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By the 4th month is when the baby is able to suck its thumb, yawn, stretch, and make faces.
By the 4th month, or the second trimester of a pregnancy, is when unborns call yawn, stretch, and do all of the listed things above. This is usually the month where you can also identify if the unborn is a male or female, since by month four, they develop their genitals and also organs. <span />
