neo darwin

Question 1

Adaptive Radiation

Coined by:

Answer 1

Hitch and Osburn

Question 2

Adaptive radiation

Answer 2

State that Progressive of similar organism into dissimilar organism.

Question 3

2 Pre-requisition for Adaptive Radiation

Answer 3

1. There should be adaptive potential of the organism, which is based on biological characteristics or potential of the organism
2. Also depend upon adaptive opportunity of the available environmental zone or niche.

Question 4

Darwin on Adaptive Radiation

Answer 4

It is different spokes radiating from center of hub of a wheel.

Question 5

osburn on adaptive radiation

Answer 5

It is great variety of adaption to different environment/ niches.

Question 6

Diagram and example of adaptive radiation

Answer 6

Divergent disruption of NS graph.

Galapagos finches

Question 7

Mosiac Evolution

Answer 7

The rate of evolution in different part/trait of organism evolve at different rate.

Bipedal motion and brain evolving. Brain evolved at much faster rate.

Question 8

Characteristics of Mosaic evolution

Answer 8

Bring changes in different part of the organs, stage by stage.

Sets a flexible framework within which different organism have to grow and develop in relation to other part of organs

Question 9

What are the two ways to understand if 2 are sharing traits

Answer 9

1. Ancestor related: Parallelism

2. Share common environmental niche: Convergence

Question 10

Parallelism

Answer 10

Parallel evolution is independent of similar evolutionary adaptation or among closely related species.

(imp) As a process in which 2 evolutionary line derive from common ancestor and evolve much in a similar way.

Question 11

Convergence

Answer 11

Evolution of similar adaptive trait in unrelated form or species

Process where evolutionary development of similar trait and adaptation in 2 group of organism that are not closely related- philogenetically

Question 12

Homologous trait and it’s type.

Answer 12

Homologous structure is same in human, whale and dog
It is of 2 type:
1. Chronology
2. Analogous.

Question 13

Chronology

Answer 13

Notion that similar feature in 2 organism look same due to shared evolutionary history.

Bones of human are same as flukes of the whale

Question 14

Analogous

Answer 14

There’ll be similar feature due to similar patterns of use, even those they are not related ancestrally

Wing of bird and bat both use for flying but evolved independently although they don’t have any common ancestor.

Hence wings are called Analogous and evolved through convergent evolution.