Final answer:
The statement in question is false because RSS sequences are not typically included in the mature mRNA as they are removed during mRNA processing.
Step-by-step explanation:
The RSS sequences, which are recombination signal sequences involved in the recombination of DNA in immune cells, are generally not included in the mRNA. This is because they are usually spliced out during mRNA processing when introns are removed and exons are joined together to form the mature mRNA. Therefore, the statement 'The RSS sequences are included in the rearranged DNA and will be included in the mRNA?' is false.