Your answer is actually all correct. Great job! A heterozygous combination would just implicate greater power to the 'dominant' dominant allele.
Answer:
Astrocytes
Explanation:
Astrocytes are the most numerous cell type within the central nervous system (CNS) and they perform a myriad of tasks ranging from axon guidance and synaptic support, to the control of the blood brain barrier and blood flow.
It is called the synaptic cleft
Answer:
an advantage is living cells can be examined in their natural state without previously being killed, fixed, and stained
