What are three ways in which bacteria obtain food

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).

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a