Sharks have cartilaginous skeletons because bone-forming ability had not yet evolved in vertebrates when they originated.
Answer the following statement true (T) or false (F)
False
You might also like to view...
Gurdon's nuclear transplantation experiments with clawed toads supported the hypothesis that:
A. differentiation is the result of genes being successively deleted from the genome. B. differentiation is the result of genes being successively turned off. C. differentiation causes cells to become pluripotent. D. only nuclei from the blastocyst retain sufficient potency to produce an adult organism. E. All of these choices are correct.
The type of transport ATPase found in bacteria, mitochondria, and chloroplasts are the ________ ATPases.
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT a typical cellular change that occurs during lung cancer?
A. cellular hyperplasia B. loss of ciliated cells C. cellular displasia D. elevated gas transport E. increases in basal cell number and thickening of epithelium
In 1992, mangrove forests along the southern Florida coast and the Florida Keys were severely damaged by Hurricane Andrew. Up to 94% mortality was recorded in some areas, with only the shortest individuals surviving. Scientists have monitored the region and by 2001, the forest canopy had closed and the main species were rapidly gaining biomass. This is an example of:
A. island biogeography B. inhibition. C. the diversity-stability hypothesis D. primary succession. E. secondary succession.