The long neck and big ears may be an advantage to hear the music but, a disadvantage in the fact that there are fine hairs lining the throat, ears, and other mucous membranes of the body for protection. The cilia in the ears being exposed to loud noises or loud music can be destroyed and cause hearing loss. As in the throat, when the cilia is damaged or destroyed by smoking, the person has to cough to bring up the mucous instead of the cilia doing its natural job. Basically, this is a disadvantage for Dave and Dina. In later generations, Dave and Dina can have children that are born deaf.
Biology - Adaptations
Dave and Dina found that, after many a night spent watching their
favourite band Death Slur, a slight adaptive mechanism was taking place.
The long-neck-big-ear syndrome gave Dina and Dave a distinct added
advantage over their fellow Death Slur groupies.
Individuals who survive and reproduce are likely to pass on their
heritable, advantageous characteristics (adaptations) to their offspring.
Over successive generations these characteristics (and their alleles) will
become increasingly frequent in the population.
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