OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Alligators and crocodiles are classified in the same order and therefore probably have different evolutionary histories.
|
|
True
|
|
|
False ____ they have the same evolutionary histories.
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -In other words, it wasn’t that the genetic differences were reduced because of overhunting. Rather, the amount of variation in crocodilians is low because change simply occurs slowly in these genomes.” The DNA in alligators, crocodiles and gharials is about 93 percent identical across the genome.
Detailed explanation-2: -As the Cretaceous Period drew to a close, the number of crocodile species began to dwindle. Deinosuchus and its offspring grew smaller over the centuries, evolving into caimans and alligators. Crocodylidae evolved into the modern crocodile and spawned several species now extinct.
There is 1 question to complete.