<span>Recessive </span>trait<span> – The trait that is never expressed in the presence of a dominant trait. It is only expressed when both traits are recessive.</span>
<span>hh homozygous recessive – white flowers</span>
Parents and first child have free earlobes so it must be dominant trait while attached is recessive. In order to have a recessive trait as seen in the second child, the parents must have a recessive allele.
It should continue to be restricted. If it is not restricted, there is a chance it will become extinct. This not only has bad consequences for us, it destroys the food web as a trophic level is effectively eliminated.