In XX Drosophila, which gene is activated during the first 2 hours after fertilization?

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#Question id: 16119

#Unit 7. System Physiology – Animal

Following statements are regarding to Shivering, which is the most potent mechanism for increasing heat production in the body. 

A. Cold environmental temperatures activate centers in the posterior hypothalamus during shivering, which then activate the α and γ motoneurons innervating skeletal muscle. 

B. Shivering involves skeletal muscle contracts rhythmically, generating heat and raising body temperature.

C. Shivering involves stimulation of Na+-K+ ATPase and raising body temperature.

D. Shivering involves stimulation of β receptors in brown fat, which increases metabolic rate and heat production.

Which of the following combination is correct?

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#Question id: 12303

#Unit 7. System Physiology – Animal

Which of the following changes would you expect to find in a dehydrated person deprived of water for 24 hours?

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#Question id: 4590

#Unit 11. Evolution and Behavior

Which of the following statements describe evolution?

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#Question id: 11632

#Unit 8. Inheritance Biology

what is critical value(for 5%), When phenotype of plant species is 4?

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#Question id: 1247

#Unit 4. Cell Communication and Cell Signaling

Which of the following is NOT true about the role of adapter proteins in the activation of Ras by receptor tyrosine kinases?