Which of the following most likely happens when astronauts go to space? - Their heart rate speeds up because the blood vessels have less blood to circulate .
- Their heart rate speeds up because the blood vessels have more blood to circulate .
- The blood vessels in their neck caves in because the heart pumps less blood per beat.
- The blood vessels in their neck bulges out because the heart pumps more blood per beat.

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

4. multiple crosses were made between true-breeding lines of black and yellow labrador retrievers. all the f1 progeny were black. when these progeny were intercrossed, they produced an f2 consisting of 91 black, 39 yellow and 30 chocolate. a. propose an explanation for the inheritance of coat color in labradors. b. propose a biochemical pathway for coat color determination and indicate how the relevant genes control coat coloration.

Which process takes place last in the human being which process takes place last in the development of a human being