-Not completely understood, share echinoderm and chordate characteristics
-Chordates/them have pharnygeal slits
-Ambulacraria hypothesis unites echinoderms and hemichordates on the basis of a shared diffuse epidermal nervous system
-Shared tripartite coelom in hemichordates/echinoderms
-Buccal diverticulum now believed to be a synapomorphy of hemichordates only
-Early embryogenesis of hemichordates similar to echinoderms
-Tornaria larva almost identical to bipinnaria larva, suggesting that hemichordates/echinoderms are sister groups
<span>-Sequence analysis of the gene encoding the small subunit of rRNA supports a deuterostome clade</span>
The arrow will always follow the flow of energy - it will lead to where the energy is going.
Answer:
C
Explanation:
The Stimulus is the fact of being with your knees locked. The sensors are the nervous fibers that receive the sensation of feeling dizzy. The effectors are the muscles that respond to the stimulus.
Answer:
allele
Explanation:
a spot on chromosome is an allele