Which is the best definition of a phylogenetic tree

The options attached to the above question are given below:

A.A table of classification that is based only on physical characteristics

B.Eight levels of taxonomic categories that are used to classify organisms

C.A branching chart that depicts evolutionary relationship among organisms

D.Organisms organized based on structure and genetic comparisons

ANSWER

The correct option is C.

A phylogenetic tree refers to a diagram, which represents evolutionary relationships that exist among organisms. Phylogenetic tree has many branches, which represents how different species evolved from a series of common ancestors. The relationships among the living organisms is usually based on the similarities and the differences in their physical or genetic features. A phylogenetic tree can be described as rooted or non rooted based on the depth of information they offer.

1. law of superposition: when there are horizontal layers of rock. the layers at the top are the youngest.

2. law of uncomformity: where one layer is much younger than the previous one, therefore creating a gap in the time record.

3. inclusion: when there is a solid stone inside of another.

4. intrusion: a feature formed when a stone is filled with magma.

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