Final answer:
The correct option in the final answer is B. The statement that rRNA genes are found within satellite DNA is false. Satellite DNA consists of noncoding sequences, whereas rRNA genes code for ribosomal RNA and are located in different regions of the genome.
Step-by-step explanation:
The statement 'rRNA genes are found within satellite DNA' is false. Satellite DNA is composed of highly repetitive, noncoding sequences in eukaryotic genomes. While satellite DNA has a structural role in the chromosome, it does not contain genes coding for ribosomal RNA (rRNA). rRNA genes are a type of moderately repetitive DNA and are crucial for the protein synthesis process. They are located in the nucleolus organizer regions of chromosomes and are transcribed into rRNA, which then combines with proteins to form ribosomes.
Experiments involving renaturation kinetics have shown that rRNA genes are found in the middle CoT fraction of eukaryotic DNA, whereas satellite DNA is associated with the low CoT fraction. This indicates that the two DNAs have different functions and exist in separate regions of the genome. Therefore, it would be incorrect to state that rRNA genes are found within satellite DNA.