Saint Bernards and Chihuahuas (two breeds of domestic dogs) cannot mate normally owing to great difference in size. Thus they are reproductively isolated to some extent. What type of isolating mechanism is operating here? * o developmental O postzygotic prezygotic O geographic​

AU9NJ-BLVHV-TCLJS-54YTB

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.

i think the answer is g1

hope i

-lavira: )