What body feature is most responsible for freeing vertebrates from dependence on watery habitats?
a. lungs
b. paired appendages
c. shelled, amniote eggs
d. a four-chambered heart
e. fur
c
You might also like to view...
Molecules made primarily of carbon and hydrogen are called hydrocarbons. How many hydrogen atoms are present in each of the following molecules? A hydrocarbon chain of five carbon atoms with two double bond and two single bonds?
A. 6 B. 8 C. 10 D. 12
What is the function of dispersed repeated sequences such as SINEs and LINEs in eukaryotes?
What will be an ideal response?
__________ are heterotrophs that grow as a mesh of absorptive filaments. Some are plant pathogens.
Fill in the blank(s) with the appropriate word(s).
Two loci evolving together as if they are a single locus is called
a. gene clustering. b. concerted evolution. c. gene duplication. d. coevolution. e. unequal crossing-over.