6. In order to identify the coding regions of a genome, name functional annotation, the following methods have been developed to study gene expression in whole genome scale, except (D) RNA-seq. (A) RT-PCR； (B) DNA microarrays； (C) serial analysis of gene expression；

1. Skin cells and neuron cells in an individual show very distinct morphology and function, but they carry identical genome. How can this occurs? (A) Different mutations occur in different cell types； (B) Different parts of genome are lost in different cell types； (C) Different sets of genes are expressed in different cell types； (D) Different chromosomes are inactivated in different cell types.

6. In order to identify the coding regions of a genome, name functional annotation, the following methods have been developed to study gene expression in whole genome scale, except
(D) RNA-seq.
(A) RT-PCR；
(B) DNA microarrays；
(C) serial analysis of gene expression；

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