Homologous structures: body structures that are similar in origin (part of the body) and function (what they do). Humans, whales, dogs, and bats have similar forelimbs. This shows that they share a common ancestor. Jump to: Fossil Evidence Embryology Vestigial Structures Homologous Structures…
Human, Bird, and Bat Bone ComparisonFrom the outside human arms, bird wings, and bats wings look very different. Humans are covered in skin, birds are covered in feathers, and bats are covered in hair. But on the inside there are many similarities among human, bird, and bat forearms. Did you know that humans, birds, and bats have the exact same types of bones in their forearm?
Natural Selection Lab - Use Math Evaluate Natural Selection & Evolution
Natural Selection Lab - Use Math Evaluate Natural Selection & Evolution Interested in an entire Evolution unit? Save money and check out this lesson bundled with six more plus an assessment here: Evolution Bundle ========================================================== Want a FULL YEAR o...
Metacarpal, any of several tubular bones between the wrist (carpal) bones and each of the forelimb digits in land vertebrates, corresponding to the metatarsal bones of the foot. Originally numbering five, metacarpals in many mammals have undergone much change and reduction during evolution. The
These Four U.S. Immigrants Have Won One of Biology's Top Prizes
There is no Nobel Prize for biology, but the discipline's top award, the International Prize of Biology, has been awarded every year since 1985 by the Japan Society for the Promotion of Science. Of the 15 Americans who received the prize between 1985 and 2017, four were immigrants to the U.S.
In their classic paper, Brown and Wilson (1) proposed that mutually negative interactions between closely related species could lead to evolutionary divergence when those species co-occurred. In the six decades since, this idea has been debated vigorously, with support that has vacillated, depending on