LIFE SCIENCE

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OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In 1971, a researcher introduced five pairs of Italian wall lizards, adapted to live on the barren island of Pod Kopiste, into the vegetation-rich island of Pod Mrcaru. Over the years, the researcher found that the lizards evolved to have longer and wider heads. Why did the heads of the lizards evolve?
A
as an adaptation to different food types
B
as an adaptation to show their dominance
C
as an adaptation to defend their territories
D
as an adaptation to mate with other lizard species
Explanation: 

Detailed explanation-1: -Genetic testing on the Pod Mrcaru lizards confirmed that the modern population of more than 5, 000 Italian wall lizards are all descendants of the original ten lizards left behind in the 1970s.

Detailed explanation-2: -Similar DNA sequences are the strongest evidence for evolution from a common ancestor.

Detailed explanation-3: -What information must be gathered before the scientists can place the fossils in the ancestral timeline of the modern dog? Compare the homologous structures of other fossils found in the same area. Locate the remainder of the skeleton for a complete anatomical comparison. Determine the relative age of the fossils.

Detailed explanation-4: -Until now, morphological data had always indicated that iguanians (such as chameleons and iguanas) were the earliest modern lineage of lizards to evolve, whereas molecular evidence consistently supported that geckos and dibamids (a small family of limbless lizards) were the earliest evolving squamates.

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