Biology (Raven), 9th Edition

Chapter 25: Evolution of Development

Pre-Test

1
The _____ genes establish body form in animals; _____ box genes have a similar function in plants.
A)CAL/Hox
B)MADS/Hox
C)Hox MADS
D)Tbx5/MADS
E)Hox/MADS
2
Cichlid fish jaws demonstrate
A)morphological diversity.
B)homeosis
C)mutations in a large number of genes
D)genetic plasticity
E)phenotypic plasticity
3
Wing patterns in butterflies have evolved as wing scales developed from ancestral sensory bristles demonstrating
A)Morphological divergence
B)CAL plasticity
C)Transcription regulation
D)Heterochrony
E)Homoplastic convergence
4
Heterochrony is:
A)the alteration of the spatial pattern of gene expression.
B)a change in the relative position of a body part.
C)a change in the relative timing of developmental events.
D)a change in a signaling pathway.
E)usually beneficial.
5
Signaling pathways are essential for cell-to-cell communication. If as a result of a mutation, a receptor is produced in a different cell type what would you expect to happen?
A)This may result in homeosis.
B)Nothing would happen.
C)A homeotic phenotype may appear.
D)This usually results in a higher survival value.
E)None of the above.
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