The accompanying figure shows the results of comparative analyses of two clades: the horseshoe crabs, and the king crabs and hermit crabs. What can you conclude from these diagram?
A) Horseshoe crabs have been on the Earth for an unusually long time.
B) King crabs appeared in the fossil record before horseshoe crabs did.
C) Hermit crabs are much older than their fossil record reveals.
D) Horseshoe crabs are as genetically divergent as king and hermit crabs, despite being far less morphologically diverse.
E) Horseshoe crabs have not been subjected to significant stabilizing selection.
D
You might also like to view...
____ are involved in the regulation of gene
expression.
a. Transcription factors b. Translation factors c. Transposable elements d. Metylation e. Phosphorylation
Which of the following has the most energy?
a. phosphoglycerate (PGA) b. ribulose bisphosphate (RuBP) c. phosphoglyceraldehyde (PGAL) d. glucose e. rubisco
Ciliate sexual reproduction by conjugation differs from sexual reproduction in most animals in that ________.
A. cell fusion occurs during fertilization B. the zygotic nucleus is diploid C. meiosis occurs in both partners D. both parents are converted into zygotes
The sorting process during cells division that ensures transmission of a full set of chromosomes to each daughter cell is called _______.
What will be an ideal response?