Question

Which feature is common to all primates?

Answer 1

Answer: large brain relative to body size

Explanation:

Primates are the vertebrates which posses large brain size as compared to the body size.  This is the common feature in all the primates. Their are four major themes for the large brain size. These includes

Genetic explanation: The primates have large brain size because a gene mutation caused their brain size large.

Developmental explanation: The primates have large brain size because the extended duration of prenatal investment cause them to grow large brain size. One more reason is that they have long gestation period.

Ecological explanation: The primates have evolved the large brain size to cope up with the demanding environmental conditions.

Social explanation: The primates follow a group lead by a leader this shows the social status of the primates influenced by their thinking.

Answer 2

Large brain relative to body size is the most common feature of primates.

Further Explanation:

Primates are an extremely diverse group of between one ninety and three hundred fifty living species, that are depends on different taxonomic level. They have various characteristic features that help in differentiate from other mammals. Examples of primates are monkey, apes etc. Humans share vary similar traits with the other primates.

The major features of primates are:

• Four limbs

• Collar bones

• High degree of movement in their shoulders.

• Forward facing eyes.

• Relatively dexterous hands

• Intelligence level is very high.

• Brain is larger than their body.

• Less number of teeth than mammals.

All the primate species possess adapted to tree climbing, because they are the ancestor of f tree-dwellers. Some other characteristics of primates are that they have claws that are modified into flattened nails, able to hold body in upright position, and produced one offspring per pregnancy.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Evolution

Keywords:

Primates, tree climbing, offspring, upright position, tree-dwellers, eyes, brain, body, shoulder, collarbones.