This is what my lil sisters grade on her test looks like

Why is excretion necessary to maintain homeostasis?

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 .

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.