What on a bird, besides it's feet, is chemically similar to scales? a. beakb. feathersc. wings

Modern whales developed their traits through natural selection what occurs during the process of natural selection

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis

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).