Answer:
vapor and elastic potentiol energy
Explanation:
The horsehoe crab because it was one of the first animals to ever live on earth
Both parents must be carriers, which means they have the heterozygous gene (one uppercase letter & one lower case letter). They will still carry that mutated gene (because they have a lower case letter), and their offspring will have a 25% chance of getting a recessive disorder. The percentage is low but still possible.