Question

**FAN AND MEDAL**
How are gene and protein sequences used to classify organisms?

Answer 1

Full genome sequences make it possible, for the first time, to completely list an organism's gene products. C. elegans has ~19,800 protein-coding genes, of which ~3,400 have mutant alleles and ~2,400 others have obvious phenotypes in mass RNAi screens: this leaves ~70% of genes functionally unaccounted for. Some of these unannotated genes are clearly ancient .....they encode proteins conserved in metazoa or eukaryotes.... and must have critical functions, even though classical biochemistry and genetics gave no indication of them before genomics.

Answer 2

Thank you!! :)

Answer 3

your welcome

Answer 4

that doesn't really answer the question.

You compare the gene sequences of different organisms and see how these differ. It follows that organisms with higher sequence similarity are more closely-related (i.e. diverged at a later time) than those with higher differences.

Answer 5

well it helped her soo
evidently it did ...

Answer 6

It helped her how? fill in some box on a short answer question?
I doubt she had any prior knowledge on the topic and would not contest what you copied-and-pasted because the topics discussed are beyond those taught at introductory level.