Which system produces harmones that affect growth, delopement, and some behaviors?

As a small change in a person's dna can cause a genetic disorder

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

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 .