Combined with the human tyrosinase gene sequence, the gene tree was constructed using parsimony method.

结合已发表人的序列，用简约法构建了基因树。

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A model that had a single common ancestor and allowed for some gene - swapping among species was even better than a simple tree of life.

一个拥有单一共同祖先且允许物种间部分基因彼此交换的模式甚至更优于树形生命模式。

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Recently, scientists in the chinchilla gene lemurs found HIV and the human (HIV) viruses belong to one family tree.

日前，科学家们在灰鼠狐猴的基因中找到了与人类艾滋病毒（HIV）同属一个族谱的病毒。

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A competitor of Mars,Hershey's, supported the gene mapping of the Criollo, a far less common cacao tree.

VOA: special.2010.10.19

"It's very significant to find a new clone variety because the tree's gene pool is very restricted and that is a disadvantage if they are threatened by disease as these are, " she said.

BBC: Black poplar trees found in Denbighshire lay-by 'unique'

Myriad objects to the comparison of the gene sequences with a branch or an apple off of a tree, and its lawyers convinced a majority of the judges on the Federal Circuit to agree.

FORBES: Big Question For Supreme Court: Can You Patent A Gene?