Practice Questions

TLS Online TPP Program

#Question id: 5128

During lens formation in the Xenopus, the following statements have been proposed. Which statement is incorrect?

#Unit 5. Developmental Biology

Expression of Pax6 protein may constitute the competence of the surface ectoderm to respond to the optic vesicle during the late neurula stage.
The optic vesicle secretes BMP and FGF family paracrine factors that induce the synthesis of the Sox transcription factors and initiate lens formation.
If Pax6 is lost, whether it is in fruit flies, frogs, rats, or humans, it results in a complete loss or reduction of the eyes.
If Pax6 is lost, still lens formation takes place in presence of Sox2 and L-maf.

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TLS Online TPP Program

#Question id: 27920

#Unit 11. Evolution and Behavior

Who was greatly influenced by Lyell’s teachings, and he adopted uniformitarianism in his thinking about evolution?

TLS Online TPP Program

#Question id: 27921

#Unit 11. Evolution and Behavior

Who hypothesized that different organisms originated separately by spontaneous generation from nonliving matter ?

TLS Online TPP Program

#Question id: 27922

#Unit 11. Evolution and Behavior

Lamarck hypothesized that different organisms originated separately by______I_________and gives a principle_______II_______.

a) spontaneous generation from nonliving matter

b) inheritance of acquired character

c) means of Natural Selection

d) Uniformitarianism

e) Spontaneous generation from living matter

TLS Online TPP Program

#Question id: 27923

#Unit 11. Evolution and Behavior

There is some given main postulates of darwinism, except?

TLS Online TPP Program

#Question id: 27924

#Unit 11. Evolution and Behavior

Which of the following is the most common way that new gene arises in eukaryotes?

TLS Online TPP Program

#Question id: 27925

#Unit 11. Evolution and Behavior

Birth of new gene arises in eukaryotes by following phenomenon, except?