AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The most precise information to use when making phylogenetic trees is ____
A
morphology
B
molecular
C
fossil
D
synapomorphies
Explanation: 

Detailed explanation-1: -Any DNA, RNA, or protein sequences can be used to draw a phylogenetic tree. But DNA sequences are the most widely used. It’s pretty cheap and easy now to get DNA sequences. Plus DNA contains more information, which can make more accurate trees.

Detailed explanation-2: -A phylogenetic tree may be built using morphological (body shape), biochemical, behavioral, or molecular features of species or other groups. In building a tree, we organize species into nested groups based on shared derived traits (traits different from those of the group’s ancestor).

Detailed explanation-3: -Today most phylogenetic trees are built from molecular data: DNA or protein sequences.

Detailed explanation-4: -Today, almost all evolutionary relationships are inferred from molecular sequence data. This is because: DNA is the inherited material. We can now easily, quickly, inexpensively and reliably sequence genetic material.

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