1. What were the key observations made by Darwin to develop the basic tenants of
ID: 49795 • Letter: 1
Question
1. What were the key observations made by Darwin to develop the basic tenants of the theory of evolution? Has this theory been tested?
2. What are the most common misconceptions about evolution and why are they not valid arguments against evolution?
3. The key component of the theory of evolution is natural selection. Define this process. Why is it commonly known as “survival of the fittest”? What are examples of factors (selective pressures) that drive evolution of populations?
4. What is the indirect evidence of evolution? What are homologous and analogous structures? What is convergent evolution? How does similarity of proteins between different species support the idea of evolution?
Explanation / Answer
key observation ;
yes this thoery is tested ;
2. misconceptions of evolution ;
3.survival of the fittest ;
it is a mechanism of the natural selection , in biological terms it is defined reproductive success .there will be increased natural selection among the generation.wich is caused by the traits which are heritable. it is random and naturally occuring
factors that drive evolution of population ;
sexual recombination ,genetic variation of traits ,genetic drift ,geneflow , from one individual to other .
4. indirect evidence of evolution ;
the indirect evidance of evolution is the fossil records , anatomy comparing the structures , molecular biology of DNA ,biogeography
homologous strutures and analogous structures ;
homologous ; similar structures but have different function example; hands in mamals have same structure but different in functions example cats and humans.
analogous ; different structure but have same function example ,wings of birds will have diffrent structure but same function .
convergent evolution; the organism are not closly related but have involved similar traits due to their adaptation to similar envinorment
similarity of proteins between different species support the idea of evolution';
the core protein structure is similar to that of the ancestors ,thoughout the phylogeney a sthe DNA sequence is similar to that of the all ancestors example the DNA enzymes ,protein protein interactions ,junk Dna nad psudogenes will be support the idea of evolution.
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