Dolphins are mammals and sharks are fish. they both have fins. this suggests that

dolphins and sharks inherited fins from a recent common ancestor

both dolphin and shark fins are vestigial features

dolphin and shark fins are analogous structures

a dna mutation caused some sharks to evolve into dolphins

In which of the following relationships is one organism always benefited while the other organism is always harmed

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

Use the above pedigree for questions 1,2, and 3 1. what kind of genetic disorder is represented in the pedigree? a. recessive b. dominate refer to the pedigree in question 1. 2. is the mutated gene in this disorder located on a sex chromosome (x or y) or an autosome? a. sex chromosome b. autosome refer to the pedigree in question 1. 3. which generation has individuals that you are certain are heterozygous for the mutated gene? a. generation 1 b. generation 2 c. generation 3