Question

anches 2a and 2b. Branch 2a leads to salamander. Branch 2b divides into two branches 3a and 3b. Branch 3a leads to lizard. Branch 3b divides into two branches that lead to goat and human, respectively. Based on this tree, which statement is correct? A phylogenetic tree of the living organisms. The main branch divides into two branches 2a and 2b. Branch 2a leads to salamander. Branch 2b divides into two branches 3a and 3b. Branch 3a leads to lizard. Branch 3b divides into two branches that lead to goat and human, respectively.
(a)-Salamanders are a sister group to the group containing lizards, goats, and humans.
(b)-Goats are more closely related to salamanders than to humans.
(c)-Salamanders are as closely related to lizards as to humans.
(d)-The human lineage is a basal taxon.

Answer 1

Answer:

a) Salamanders are a sister group to the group containing lizards, goats, and humans.

Explanation:

A phylogenetic tree is a diagram that represents the evolutive relations between organisms. As you can see in the attached image, the branch that contains salamanders and the group containing lizards, goats and humans, come from the same point as they are in the group 2a and 2b, because of this Salamanders are a sister group to the group containing lizards, goats, and humans.

b) Goats are in the same level as humans because they come from the same point, so they are more close between them than with salamanders.

c) Lizards are more closely related to salamanders than humans, because humans are in an upper branch, then is not true that salamanders are closely related to lizards as to humans.

d) A basal taxon is a lineage that evolved early, so it separates from the tree in an early stage, as it happens to the salamanders that separated early but not humans.

Then the correct answer is a)

Salamanders are a sister group to the group containing lizards, goats, and humans.