A valid conclusion from this cladogram is that(1 point)

Question

Responses

salamanders, trout, and lampreys all have a backbone.
salamanders, trout, and lampreys all have a backbone.

mammary glands appeared in vertebrate evolution after the placenta appeared.
mammary glands appeared in vertebrate evolution after the placenta appeared.

humans and lampreys share a common ancestor.
humans and lampreys share a common ancestor.

four limbs appeared in vertebrate evolution before the notochord appeared.

Answer 1

Based on the information provided and typical interpretations of cladograms, the most valid conclusion is:

humans and lampreys share a common ancestor.

Cladograms illustrate the evolutionary relationships among species, and if humans and lampreys are shown to branch from a common point, it indicates that they share a common ancestor. The other statements about mammary glands, four limbs, and backbones may not be directly supported by a cladogram without additional context to indicate their respective positions in vertebrate evolution.