Natural selection in an animal population results in narrowing of the range of phenotypic variation but no change in the average phenotype. What kind of selection is this population experiencing?

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#Question id: 4120

#Unit 3. Fundamental Processes

Which of the following homolog matching is incorrectly matched with thier respective subunits?

	Bacterial	Archaea	RNAPI	RPAII	RPAIII
1.	B’	A’/A’’	RPA1	RPB1	RPC1
2.	B	K	RPA3	RPB2	RPC4
3.	aI	D	RPC5	RPB3	RPC5
4.	aII	L	RPC9	RPB11	RPC9

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#Question id: 22939

#Unit 5. Developmental Biology

CO gene expression appears to be highest in the companion cells of the phloem of leaves and stems, the downstream target gene of CONSTANS is

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#Question id: 1786

#Unit 4. Cell Communication and Cell Signaling

Which of the enzyme can cleave C3 and C4 complement protein

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#Question id: 5205

#Unit 11. Evolution and Behavior

Why is it preferable to use large computers and databases in searching for individual genes, rather than testing each sequence for possible function?

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#Question id: 12241

#Unit 10. Ecological Principles

The process of speciation can be prevented by