An explanation for the evolution of insect wings suggests that wings began as lateral extensions of the body that were used as heat dissipaters for thermoregulation. When they had become sufficiently large, these extensions became useful for gliding through the air, and selection later refined them as flight-producing wings. If this hypothesis is correct, insect wings could best be described as

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#Question id: 24550

#Unit 9. Diversity of Life Forms

Only four possible states of a particular site in a DNA sequence, which of the following statement is correct?

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#Question id: 19809

#Unit 12. Applied Biology

For virus resistance many transgenic plants are produced by using which gene along with strong promoter?

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#Question id: 5082

#Unit 5. Developmental Biology

 In which of the following organisms does holoblastic cleavage typically occur?

I) sea urchins

II) humans

III) birds

IV) fish

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#Question id: 2649

#Unit 2. Cellular Organization

Which operon behaves similar to Bacillus subtilis trp operon in terms of attenuation?

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#Question id: 28617

#Unit 2. Cellular Organization

Phosphoserine/threonine-binding F-box protein is__