Echidnas are marsupial mammals that have quills all over their body and look like placental hedgehogs. The two are not closely related. Echidnas are found in Australia and hedgehogs are found in Europe, Asia and Africa. Their resemblance is a result of which of the following? a. Adaptive radiation
b. Convergent evolution
c. Disruptive selection
d. Homologous features
e. Sympatric speciation

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

If a baby girl guinea pig looks almost identical to its mother, does this then mean that it inherited more alleles from its mother? explain. (hint: think about the vocabulary words dominant and recessive.)