What is the definition of a asexual human

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 .

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

How do ratio scale and diagrammatic scale work