Question

Summarize and explain ALL the 3 major trends in mammalian evolution (Differentiation of Teeth, Increased Brain...

Summarize and explain ALL the 3 major trends in mammalian evolution (Differentiation of Teeth, Increased Brain Size, Longer internal development).

Homework Answers

Answer #1

Ans . MAMMALIAN EVOLUTION

1) Differentiation of teeth :- Among them simple triangular teeth seem to be ancestral to the molars of tertiary mammals. Modernized triangular teeth with three main cusps first appeared in cretaceous period. From the paleocene onward teeth provide important evidence concerning the evolution of mammalian lineages.

2) Increased brain size :- The factors that contributed to increased brain size is social complexity, foraging strategies, symbolic communication,capabilities for other culture - mediated behaviours etc.

3) Longer internal development :- A major development in the evolution of mammals was placentation, internal development of foetus and protracted care after birth to ensureinfant survival to reproductive age.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Final Review Sheet-Physical Anthropology Part 1 (matching-in class) 1. Be able to distinguish the focus areas...
Final Review Sheet-Physical Anthropology Part 1 (matching-in class) 1. Be able to distinguish the focus areas between the fields of Anthropology and their subfields (i.e. forensic anthropology, paleoanthropology, primatology) 2. Differentiate and identify the components of the DNA molecule and RNA molecule 3. What is the centromere? 4. Be able to define the terms gene, genotype, phenotype (i.e. ABO blood typing) 5. Be familiar with Mendel and his pea plant experiments and be able to use a Punnett square 6....
Pfizer was established in 1849 in Brooklyn, New York by cousins Charles Pfizer and Charles Erhart...
Pfizer was established in 1849 in Brooklyn, New York by cousins Charles Pfizer and Charles Erhart with a loan of $2,500 from Pfizer’s father.2 Today, 167 years later, Pfizer Inc. has international revenues of $49 billion, which makes it the second-largest pharmaceutical manufacturer in the world.3 Despite Pfizer’s success, the company has faced many challenges over the last few decades. The pharmaceutical industry is heavily influenced by legal, political, and technological forces, and all indications are that the industry will...
What role could the governance of ethics have played if it had been in existence in...
What role could the governance of ethics have played if it had been in existence in the organization? Assess the leadership of Enron from an ethical perspective. THE FALL OF ENRON: A STAKEHOLDER FAILURE Once upon a time, there was a gleaming headquarters office tower in Houston, with a giant tilted "£"' in front, slowly revolving in the Texas sun. The Enron Corporation, which once ranked among the top Fortune 500 companies, collapsed in 2001 under a mountain of debt...