Gerri says that spiders use their fangs for the same purpose that crustaceans use their claws. Alana
disagrees and says that spiders use their fangs for the
same purpose that centipedes use their claws.

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .