The answer is the endogenous opiate.
The human body naturally produces its own opiates like substances and uses them as neurotransmitters. These substances include endorphins, enkephalins, and dynorphin, often collectively known as endogenous opioids. Endogenous opioids modulate our reactions to painful stimuli.
I think A- laboratory mice are similar but not identical
HOXC8 gene encodes a protein that has a role in the development of the cartilage. This gene is a member of the HOX group gene that enables the differentiation of the body segments. These genes encode for transcription factors that activate the expression of other specific genes guiding the differentiation of body segments into specific structures.
Hello,
Here is your answer:
The proper answer to your question is option B "Vascular"! Vascular tissues are responsible for transporting water around the body!
Your answer is B.
If you need any ore help feel free to ask me!
Hope this helps!