Question

Which of the following is a species?

a. A monophyletic group of beetles who share a common ancestor and can be distinguished from the most closely related group of beetles

b. A group of birds who are interbreeding with each other but are reproductively isolated from other groups

c. A metapopulation of salamanders who are linked by gene flow

d. A lineage of microbes adapted to a particular ecological niche

e. All of the above are considered species under at least one species concept

Answer 1

E is correct answer because there are many concept for species defination . Each option meet one concept . Some concept called a species ( which is interbreeding and reproductively isolated from others) other check ancestor symmetry ,some other concept check gene flow , some check for morphology simmilarity.