A species of frog lives in a forest. What will happen to the frog population if a snake species moves into the ecosystem and hunts the frogs? Some of the frogs would try to develop new traits to avoid the predator and pass those traits onto their offspring, and the other frogs would die.

B.
All of the frogs would try to develop new traits to be able to avoid the predator, and they will all survive and pass on their new traits to offspring.

C.
The frogs that were born with traits that allow them to avoid the snake would be more likely to survive and reproduce, and the frogs that cannot avoid snakes would be less likely to survive and reproduce.

D.
Since all of the frogs have identical traits, they would all be equally good or bad at avoiding the snake and so they would all survive and reproduce or they all would die.

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.