Re: [問題] 請問homologies 同源性 的精確定義

[onehundred (111)]

※ 引述《amateratha (大天使長路西法)》之銘言：
: 小弟我對這個字的定義有點不明，其定義究竟是純粹描述
: 不同生物在解剖結構或基因序列的相似或相同？
: 還是其定義是在講生物的共同祖先？
: 煩請諸位賜教，謝謝～

取自NCBI的定義
希望對你有些幫助

http://www.ncbi.nlm.nih.gov/Education/BLASTinfo/glossary2.html

Homology :
Similarity attributed to descent from a common ancestor.

Similarity
The extent to which nucleotide or protein sequences are related. The extent of
 similarity between two sequences can be based on percent sequence identity and
/or conservation. In BLAST similarity refers to a positive matrix score.

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