What molecular evidence have been found in cnidarians, which have radial symmetry, that is evidence to indicate
cnidarians share a common ancestor with bilateral animals?
a. DNA
b. RNA
c. Hox genes
d. chromatids
e. amino acids
c
You might also like to view...
The work of James B. Sumner was to
A) discover ribozymes. B) prove that enzymes were carbohydrates. C) isolate the insulin hormone. D) originate the term ferments to describe enzymes. E) crystallize urease, the first enzyme isolated.
With __________, an animal modifies a voluntary behavior in response to the behavior's
consequences. Fill in the blank(s) with the appropriate word(s).
There are no long-term data to support the idea that the community structure of aquatic species has changed due to climate change
Indicate whether the statement is true or false
When a hurricane destroys a forest and kills many of the organisms living there, it is referred to as
A. an extrinsic limiting factor. B. a density-dependent limiting factor. C. an intrinsic limiting factor. D. None of these answers is correct.