The variation that arises is directed toward fixed goals, so that a species evolves in a predetermined direction by some kind of internal drive, without the aid of natural selection. This hypothesis is known as,

TLS Online TPP Program

#Question id: 3684

#Unit 3. Fundamental Processes

Which of the followings are the characteristic feature of DNA replication?

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#Question id: 18223

#Unit 11. Evolution and Behavior

The origin of indirect evidence of life, no recognizable fossils except bacteria (microfossils) was during which geological eras?

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#Question id: 12663

#Unit 10. Ecological Principles

Which of the following is the pattern of spacing for individuals within the boundaries of the population? 

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#Question id: 5728

#Unit 8. Inheritance Biology

A phenotypically normal man carries a translocated chromosome that contains the entire long arm of chromosome 14, part of the short arm of chromosome 14, and most of the long arm of chromosome 21. The man also carries a normal chromosome 14 and a normal chromosome 21. If he marries a cytologically (and phenotypically) normal woman, there is many chance that the couple will produce phenotypically abnormal children? Which of the following is correct combination?

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#Question id: 12402

#Unit 6. System Physiology – Plant

According to the Cholodny–Went model of phototropism, the tips of grass coleoptiles have specialized functions such as

a) Production of auxin

b) Perception of a unilateral light stimulus

c) Lateral transport of IAA in response to the phototropic stimulus

Which of the following given above functions is correct?