I attached an answer that I found, but I'm not sure.
This was because one cannot view a single strain of DNA as it is too small for one to visually comprehend.
The correct answer is codominance.
Codominance is when the alleles of a gene, in a heterozygote organism, are not fully expressed. In this case, either red or white fully dominates but they still manifest that they are present in the flower.
Do not get confused with incomplete dominance because that would result in a pink flower.
Because neurones will not function properly neither will neuroreceptors if a person lacks neurotransmitters, these two parts (transmiters and receptors) all work together and depend on eachother.
Neurones are resposible for transmitting informations trought the body, and if neurotransmitters are no-existent, information may not be able to get to some body parts since neurotransmitters transmit the information.
Hope it helped,
Happy homework/ study/ exam!