The blood carries carbon dioxide away from the cells
<span>A
section of DNA that is not expressed in the gene product is called
intron. The final messenger RNA molecule is called exon. Eukaryotic cells have
the enzyme to cut off the intron section to produce a continuous strand
of mRNA so that protein synthesis can occur. Prokaryotic cells can
express the information to produce protein directly as the mRNA does not
contain intron. </span>
Answer:
The correct answer will be- the Pineal gland
Explanation:
The endocrine system is a system of glands which controls the body functions by secreting chemical messengers called the hormones.
The endocrine gland which is found in the middle part of the brain is called the pineal gland which is associated with the wake-sleep cycle of the body by producing a hormone called melatonin.
Thus, the pineal gland is the correct answer.