The following question refers to this phylogenetic tree, depicting the origins of life and the three domains. Horizontal lines indicate instances of gene or genome transfer.

A possible phylogenetic tree for the three domains of life.
Which of these processes can be included among those responsible for the horizontal components of the figure?
A) endosymbiosis
B) mitosis
C) binary fission
D) point mutations

Question

The following question refers to this phylogenetic tree, depicting the origins of life and the three domains. Horizontal lines indicate instances of gene or genome transfer.

A possible phylogenetic tree for the three domains of life.
Which of these processes can be included among those responsible for the horizontal components of the figure?
A) endosymbiosis 
B) mitosis 
C) binary fission 
D) point mutations

Quizplus · Accepted Answer

Endosymbiosis is the process of one organism living inside another and forming a symbiotic relationship. This can lead to the transfer of genes and genomes between the two organisms, resulting in horizontal components in a phylogenetic tree.

The Following Question Refers to This Phylogenetic Tree, Depicting the Origins