If two different alleles for a trait are present and one allele doesn't entirely block the expression of the other, the genetic situation is in-complete Dominance
For the answer to the question above, I think the answer is that the <u><em>f</em></u><u><em>rogs have a BACKBONE.</em></u><span>
</span>which the <span>phylum like squid, snails, and jellyfish don't have. I hope my answer helped you. Have a nice day ahead!
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It helps break down waste and consume it as well as by eating dead organisms
Hope this helps :))
