What does the biological species concept use as the primary criterion for determining species boundaries?

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#Question id: 4902

#Unit 8. Inheritance Biology

Leber hereditary optic neuropathy (LHON) is mitochondrial diseases present in family. Which of the following observation is correct?

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#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

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#Question id: 19788

#Unit 13. Methods in Biology

Thermal modulation are used in PCR for the function of__

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#Question id: 15248

#Unit 2. Cellular Organization

Which of the following groups of microorganism contain both  superoxide dismutase and catalase enzymes for growth?

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#Question id: 10921

#Unit 6. System Physiology – Plant

The mechanism of phloem translocation in angiosperms is best explained by which method?