What is an allele? trait form that is hidden by a dominant gene identical copies of two different genes trait form that is displayed by recessive genes one of different forms of the same gene

Environmental differences within ecosystems are generally caused by

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.