Can you provide more details so that I can answer your question properly?
<span>AntiÂpsychotic drugs generally work by blocking a specific subtype of the dopamine receptor, known as the D2 receptor. This helps to regulate the functioning of brain circuits that control thinking, mood, and perception.</span>
ANSWER
mRNA - formed from the DNA gene sequence with the help of RNA polymerase.
EXPLANATION
mRNA contain codons which are complement to
tRNA anticodons.
rRNA formed in nucleolus.
tRNA carries the amino acid.
Answer - A
Semi-conservative model of replication involves the replication of DNA in all the familiar cells in such a way that each newly synthesized daughter cell contains a double helix with one new strand and one old strand.