Final answer:
In the comparison between animals with hair and the development of the amniotic egg, humans and rabbits are part of the haired clade. The amniotic egg evolved before hair. Monotremes like the platypus and echidna are notable as early mammals with some ancestral traits.
Step-by-step explanation:
Evolution of Hair and the Amniotic Egg
The question asked which animals in a given figure belong to a clade that includes animals with hair. When looking at the figure which lists Lancelet, Lamprey, Fish, Lizard, Rabbit, and Human, the rabbit and human belong to this clade, as they are mammals and mammals are characterized by the presence of hair.
An interesting facet of evolutionary biology is determining which traits evolved first. When considering the emergence of hair or the amniotic egg, the amniotic egg evolved first. This was a significant development in the history of vertebrates because it allowed the early amniotes to reproduce on land, reducing their dependency on water for reproduction. Hair evolved later in mammalian ancestors, further distinguishing them from other amniotes like reptiles and birds.