LIFE SCIENCE

Previous
Next

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Archeologists comparing the fossil remains of a species of reptile that lived thousands of years ago with the anatomical structure of a modern reptile concluded the species had experienced only minor changes over the entire time period. Which explanation most likely accounts for this lack of significant change?
A
Interbreeding among the reptiles resulted in reduced phenotypic diversity and a reduction in non-random mating.
B
Environmental changes reduced the population size, resulting in a smaller gene pool and reduced fitness.
C
The reptiles were well-suited to their environment, and the favorable phenotypes remained common in the population.
D
The reptiles continuously adapted to their changing environment, resulting in a change in favorable phenotypes
Explanation: 

Detailed explanation-1: -Similar DNA sequences are the strongest evidence for evolution from a common ancestor.

Detailed explanation-2: -What can scientists conclude about the changing structure of the horses’ foot? As horses evolved, their toes remained as vestigial structures. As horses evolved, the structure and size of their feet became smaller. As horses evolved, they developed toes that were better suited to their changing environment.

Detailed explanation-3: -It has remained unchanged over many generations. Q. Which information would best help scientists verify the relationships among the organisms shown above? The organisms’ DNA.

Detailed explanation-4: -phylogeny, the history of the evolution of a species or group, especially in reference to lines of descent and relationships among broad groups of organisms.

There is 1 question to complete.
Previous
Next