Provide an example of gene redundancy that occurs in both eukaryotes and prokaryotes
A) centromeres
B) spindle fiber protein genes
C) CNV
D) rDNA
E) cell wall proteins
Answer: D
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During the development of the vulva in Caenorhabditis, when the Notch ligand binds a Notch receptor on a progenitor cell:
A. signal transduction results in activation of a set of transcription factors. B. genes that produce the Notch ligand are transcribed. C. genes that produce the Notch receptor are inhibited. D. genes that produce the EGF receptor are inhibited. E. None of these choices are correct.
In the late 1920s, a mutation occurred in many silver fox farms around the world. The fox farms that sold expensive
furs were proud of the quality of their furs, and each advertised that it had the best, purest breed of all the fox farms. The new mutations produced a "platinum" coat pattern that was commercially desirable, so the farms crossed them to get more. The results of their breeding experiments were as follows: (1) silver ´ silver >>> all silver offspring; (2) silver ´ platinum >>> equal numbers of silver and platinum; (3) platinum ´ platinum >>> two platinum for each silver offspring. Explain. What will be an ideal response?
Cancers that metastasize and invade normal tissues to impede their functions are called
A) benign tumors. B) keratosis. C) malignant tumors. D) in situ cancer. E) neoplasm.
Viruses that persist in the cell and cause recurrent disease are considered?
A) oncogenic B) cytopathic C) latent D) resistant