Anthropology Answer Writing Practice - Week 1 - Question 4
90 Days Anthropology Answer Writing Practice Question 2 for 06-Dec-2017
Instructions for Writing Answer1. Write your answers in the comment section.
2. Experts will provide their feedback in reply.
3. Model Answers will be uploaded on this page next day.
4. Rectify your mistakes and progress further.
5. All the Best.
04-Dec-2017 - Question 2
How is Darwinism different from Lamarckism? Critically evaluate their contributions.
Attempts to explain the similarities and differences among species
Adaptations- are a major component to these theories.
Adaptations are features which make a species better suited to live and reproduce in its environment
The evolutionary theory of Jean-Baptiste Lamark was based on the principle of:
- Use and Disuse
- Inheritance of acquired traits
For an organism, new structures appeared in the course of evolution because they were needed. Structures that were present and were used became better developed and increased in size; structures that were not used decreased in size and eventually disappeared
Ex: muscles of an athlete vs. Appendix
Inheritance of Acquired Traits:
Useful characteristics acquired by an individual during its lifetime can be transmitted to its offspring
These acquired traits result in species that are better adapted to their environment
Ex: a giraffe s neck became longer as a result of stretching to reach higher branches. This acquired trait was then passed down to the offspring
Darwin presented theory of evolution in " origin of species and made 3 observations & 2 deductions
Observation 1: all organism has potential for explosive population that would outstrip their food supply ( idea from Malthus)
Observation 2: population of species remains more or less constant over generation
Deduction1: therefore there must be struggle for existence
Observation 3: nature is full of variations, even in one animal group individuals vary
Deduction2: therefore some of these variations are favored & some are disfavoured
2) Struggle for existence: interspecies , intraspecies , struggle against environment
3) Hereditary & variation : Useful , permanent variations are hereditary
4) Survival of fittest /natural selection: nature selects organism with useful variations, therefore, results in differential reproduction
5) Origin of species: individuals selected by environment accumulate variations -- new species.
Note: The model answer is only for your reference and not an ideal answer for the question.Link to Question 1 - Click Here