Darwin

Question 1

What was the timeline of ‘The origin of species’?

Answer 1

① July 1837 - Darin started maintaininga notebook on transmutation of species
② started searching for the course of evolutionary change
③The sketch of 1842: wrote evolutionary ideas in , a manuscript that was not published in a lifetime
④ the essay of 1844 - expanded vision of the sketch
⑤ 1854 - Darren returned to evolutionary work after studying barnacles for 8 years
⑥ 1856 - started writing a 1000-page book he intended to call natural selection
① 1858 - Alfred Wallace sent a letter trying to understand& conclude natural selection to be the cause of evolution.
⑧ July l 1858: Darwin wanted to prove that he had not stolen ideas so in his meeting with linen society represented a summary of his findings
⑨abandoned the natural selection & wrote a shorter presentation of his ideas, The origin of species.

Question 2

Why did Darrin keep the 1844 essay a secret?

Answer 2

→ wanted to sure up his reputation as a natural historian
→ scared after criticians The vestiges received

Question 3

What was the main theme of the origin of species?

Answer 3

→ natural & artificial selection and also how common descent can explain morphological similarities in systematic group settings. , embryological similarities, audimentarys vestigial organs, geo-distribution of organisms and sequence of fossils.

Question 4

What was Darwins proposed cause of evo-change?

Answer 4

① natural selection
② use & disuse.

Question 5

What according to Darwin causes evolutionary change?

Answer 5

① use & disuse
② natural selection

Question 6

What were Darwins view on heredity?

Answer 6

① pangenesis: this developmental theory stated ‘ that there are gemmules in our blood that go & congregate in the sex organs to ensure the genres contain the traits
②types of variations
- continous variation and sport variation

Question 7

What debate arose after darwinian evolution and selection came to the forefront

Answer 7

Fleming Jenkin
- the darwinian evo is inconsistent with what is known about heredity and species
- individual variation cannot change beyond a certain limits
- large variations or mutations will be blended out by reproduction
A.W Benett
- natural selection cannot fashion complicated adaptations as it will have to be both small and adaptive
William Thomson
- not enough Sun reserve to support this type of evolution