If the genus Acer (maples) is monophyletic, then this means that all species of maples

A modern goal of systematics is to classify organisms based on physical appearances, not common ancestry.

When one species consisting of a single large population slowly evolves over many generations into several populations of a several new species, this is an example of 

Archaea that tolerate and/or require high temperatures are called halophiles.  

Which of the following is NOT true of horizontal gene transfer?

The difference between an akinete and endospore is that 

What nucleotide change is a shared derived character for species A, B, and C, but not for species G? Note: A,T,G, and C refer to nucleotide bases, and the numbers refer to the position of the base in the nucleotide sequences. For example, A6 refers to an adenine at the sixth position.

What is the source of carbon for the synthesis of organic molecules in a photoautotroph or any autotroph in general?  

Fortunately, it is possible to obtain DNA from small tissue samples of extinct species for use in constructing phylogenetic trees.

Members of the plant family Cactaceae (cacti) are native to the Americas and thrive in dry environments.  They have a number of specialized adaptations, including reduced leaves, succulent (fleshy) stems for water storage, and spines for defense against herbivores.  Some members of the family Euphorbiaceae are native to Africa and resemble cacti, having similarly reduced leaves, succulent stems, and thorns. However, their common ancestor likely did not have these traits.  Based on this information, what can you say about the morphological traits of Cactaceae and Euphorbiaceae indicated above?