Final answer:
Comparison of sequenced genomes of over 100 eukaryotes has shown that their genomes are much more complex than prokaryotes, with important implications for our understanding of evolution and genetic variation. Genomes have been shaped by evolutionary processes, with findings including the repetitive nature of DNA and the functional similarities across species. These studies have also led to changes in the classification of organisms based on genetic relationships.
Step-by-step explanation:
The sequencing of the genomes of over 100 eukaryotes has provided a wealth of information about the complexity and diversity of life. It revealed that eukaryotic genomes are much more complex and larger in size than prokaryotic genomes. With molecular evidence for evolution, these studies have underscored the presence of many common genes across different species, supplying insight into their evolutionary relationships.
One key finding is the extent of genetic variation within and between species, highlighting the importance of such variation as the raw material for evolution. Additionally, experiments have revealed that much of the eukaryotic genome consists of various classes of DNA, some of which are highly repetitive. The structure of genomes is now understood to be a vital component in the evolutionary process, with genome size and organization, such as multiple origins of replication and rate of replication, playing significant roles in an organism's genetic make-up.
Finally, genomic comparisons have helped to reshape the understanding of phylogenetic relationships, leading to the reclassification of life's domains and a deeper understanding of the evolutionary history of organisms, such as the disassembly of the Kingdom Protista due to newfound genetic relationships.