Joy has a DNA sample from each of five unknown animals. She wants to find the molecular mass of each sample to determine which sample belongs to which animal. Which method should she use?

What is the cause hearing loss in human being

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

How water is moving through the ecosystem ?