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TLS Online TPP Program
#Question id: 8917
#Unit 9. Evolution & Diversity of Life Forms
The Hox genes came to regulate each of the following in what sequence, from earliest to most recent?
1. identity and position of paired appendages in protostome embryos
2. formation of water channels in sponges
3. anterior-posterior orientation of segments in protostome embryos
4. positioning of tentacles in cnidarians
5. anterior-posterior orientation in vertebrate embryos
TLS Online TPP Program
#Question id: 8918
#Unit 9. Evolution & Diversity of Life Forms
In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that
TLS Online TPP Program
#Question id: 8919
#Unit 9. Evolution & Diversity of Life Forms
The last common ancestor of all animals was probably a
TLS Online TPP Program
#Question id: 8920
#Unit 9. Evolution & Diversity of Life Forms
Almost all of the major animal body plans seen today appeared in the fossil record over 500 million years ago at the beginning of the
TLS Online TPP Program
#Question id: 8921
#Unit 9. Evolution & Diversity of Life Forms
Evidence of which structure or characteristic would be most surprising to find among fossils of the Ediacaran fauna?
TLS Online TPP Program
#Question id: 8922
#Unit 9. Evolution & Diversity of Life Forms
Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?