When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?

of those who start drinking before they're 15 will develop alcohol dependence

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

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