Why don't phylogenetic (cladistic) classifications have a fixed number of hierarchical categories like those in a Linnaean classification?
What will be an ideal response?
Each branching point is a hierarchical level in the nested structure of a phylogenetic classification. The number of branching points—and therefore the number of possible hierarchical levels—varies from one lineage to another.
You might also like to view...
Lipoproteins that are primarily sent to skeletal muscles and adipose tissues are called
A) chylomicrons. B) very-low-density lipoproteins. C) micelles. D) low-density lipoproteins. E) high-density lipoproteins.
Using spirometry, a patient discovers their forced expiratory volume (FEV) after the first second is 40%. What does this suggest?
A) exposure to asbestos B) restrictive disease C) obstructive pulmonary disease D) healthy lungs
Suckling
a. induces milk secretion due to prolactin release. b. induces milk ejection due to oxytocin release. c. inhibits LH and FSH secretion. d. both (a) and (b) above. e. all of these answers.
Which of the following is the mildest consequence of traumatic brain injury?
A) swelling B) concussion C) contusion D) hemorrhage