The rRNA or the ribosomal RNA (Ribonucleic acid) is produced inside the nucleus of the cell. The rRNA, after it is produced in the nucleus, is combined with the cytoplasmic proteins, which enter the nucleolus, where the ribosomes are then formed. The rRNA is incorporated into these ribosomes.
The rRNA helps in the process of protein synthesis along with the mRNA, and the tRNA.
The first one. Gametes are the reproductive cells: sperm and egg cells. These contain the info that is passed on to the offspring, so an inherited mutation must be present in the gametes.