Answer:
The central dogma of molecular biology (sometimes Crick's central dogma after Francis Crick who coined the term and discovered some of the principles) states that the flow of genetic information is "DNA to RNA to protein". With a few notable exceptions, all biological cells conform to this rule.
(courtesy groups.inf.ed.ac.uk, article Central dogma of molecular biology)
Mitochondria and chloroplasts both contain their own nucleic acids which are separate to those contained in the nucleus of the cells which these organelles are contained.
O<span>nly the water can enter into the bag and leave the bag, the tea leaves can not leave the bag.
Happy studying ^-^</span>
