Final answer:
An example of satellite DNA is the Alpha satellite DNA, which is present in primates and has a significant role in chromosome functions. Its conservation indicates strong selective pressure to maintain its structure and function.
Step-by-step explanation:
An example of a satellite DNA family is the Alpha satellite DNA found in primates, including humans. Satellite DNAs are sequences that are repeated many times in the genome and are often found in the centromeric regions of chromosomes. The conservation of the Alpha satellite DNA family is highlighted by its crucial role in chromosome pairing and segregation during cell division, indicating a strong selective pressure to maintain its sequence and function over evolutionary time. Although sequence variations can occur within the repeats, the overall structure and function of satellite DNA tends to be highly conserved due to its critical role in the genome.
To outline an experiment determining if a DNA sequence is repetitive, one could use renaturation kinetics. This involves denaturing DNA to separate the strands and then allowing them to reanneal. Regions that are highly repetitive will renature more quickly than unique sequences. By tracking the renaturation over time, one can determine the proportion of repetitive DNA. Satellite DNA, being highly repetitive, would renature quickly compared to less repetitive DNA sequences.