I think the answer is letter A. I hope this helps and i would have someone check this to make sure it's the correct answer for sure.
Acetylcholine is the most abundant neurotransmitter (molecule that sends signals from 1 nerve cell to another) in the body. One major function of acetylcholine is found at neuromuscular junctions. Here is transmits signal from a neuron to a muscle cell and is therefore responsible for initiating muscle contraction.
Not quite sure if you're given any answer choices, but here are some diseases that have been linked to having a deficiency with this neurotransmitter:
Parkinson's
Huntington
Alzheimer's
Myasthenia gravis (characterized by muscle weakness and fatigue)
A. show the hierarchy of an organization
Answer:
C
Explanation:
The F2 offspring of a cross would follow the ratio of 9:3:3:1 only if the cross is a <u>dihybrid for two unlinked traits</u>.
There is nothing like a monohybrid cross for two traits. A cross involving two traits is a dihybrid cross. Hence, options a and b are out of the equation.
A dihybrid cross for two closely linked traits would produce F2 offspring in another ratio that is different from 9:3:3:1 depending on the linkage map.
<em>Hence, the correct option is</em><em> C</em><em>.</em>
