Molecule, organelle, cell, tissue, organ, organ system, organism, community, population, ecosystem, biosphere
Answer:
<h2>an organism in which both copies of a given gene have the same allel is homozygous. </h2>
Answer:
I believe it is cellulose, I'm not a 100% sure
Characteristics of Lancelets:
Small
Elongated
Marine invertebrate
Lacks a jaw
No sense organs
Has a notochord
Example: Lamprey
Characteristics of Tunicates:
Marine invertebrate
Has an outer coat that is rubbery or hard
Has two siphons
Examples: sea squirts, salps
I hope this is the answer that you were looking for.