If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

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#Question id: 217

#XL - Q Biochemistry

Which substance would make a good ligand for biotin on the matrix of an affinity chromatography column?

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#Question id: 19754

#XL - P Chemistry

Which factor is not responsible for the formation of ionicbond?

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#Question id: 416

#XL - R Botany

The immediate precursors of DNA and RNA synthesis in the cell all contain:

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#Question id: 577

#XL - Q Biochemistry

Most of the known enzymes are ________.

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#Question id: 8906

#XL - T Zoology

What do hagfishes and lampreys have in common with the extinct conodonts?