Analyzing DNA from present-day and ancient genomes provides a complementary approach for dating evolutionary events. Because certain genetic changes occur at a steady rate per generation, they provide an estimate of the time elapsed. These changes accrue like the ticks on a stopwatch, providing a “molecular clock.” By comparing DNA sequences, geneticists can not only reconstruct relationships between different populations or species but also infer evolutionary history over deep timescales.
The adaptation of the California quail to live in the
chaparral biome is by crepuscular activity. This means that unlike nocturnal
animals that are most active in the night and diurnal animals that are most
active in the day, the California quail is most<span> active at dawn and dusk</span>
