Rev Flashcards by Ibrahim Khan

Q

First’ organism which released O2 in environment

A

Cyanobacteria

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Q

Free living unicellular eukaryotic organism originated about

A

1.5 billion years ago in primitive ocean

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Q

Miller saw formation of amino acids

A

Glycine.
Alanine
Aspartic acid

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Q

Universe originate

A

20 billion year ago

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Q

Earth

A

4.5 billon

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Q

First’ organic comp

A

Methane

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Q

First’ inorganic comp

A

Water and ammonia

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Q

Cellular form of life

A

2 bya

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Q

First cellular form

A

2000 mya

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Q

Invertebrates were formed

A

500mya

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Q

Jawless fishes

A

350 mya

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Q

See wead and few plants

A

320 mya

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Q

Biggest dianosour

A

Tyrannosaurus

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Q

Dianosour dissapera

A

65 mya

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Q

Atavism / Reversion

A

Appearance of the extinct character

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Q

Two key components of Darwinism theory

A

Branching descent
Natural selection

Q

Most potent force dfor organic evolution

A

Inter specific struggle

Q

Original drifted population

A

Founder population

Q

The essence of darwanism theory about evolution was

A

Natural selection

Q

Dryopithecus and ramapithecus

15 mya

Dryo. Common ancestor ofeman and ape

A