German scientist Carl Correns found that the inheritance of variegated color on the leaves of certain plants was determined only by the maternal parent. What phenomenon explains this pattern of inheritance?

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#Question id: 15276

#Unit 13. Methods in Biology

At high salt concentrations, the mRNA containing poly(A) tails binds to the complementary oligo(dT) molecules of the affinity column, and so, mRNA will be retained; all other RNA molecules can be washed through the column by further high salt solution. finally, the bound mRNA can be eluted by using

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#Question id: 15277

#Unit 13. Methods in Biology

Although PCR and replication show resemblances, but the basic difference is

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#Question id: 15278

#Unit 13. Methods in Biology

A DNA sample having mass 1 ng undergoes PCR, the eluted DNA is weighted about 1 microgram, the minimum number of cycles required

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#Question id: 15279

#Unit 5. Developmental Biology

Which of the following process is essential for successful syncytial specification?

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#Question id: 15280

#Unit 5. Developmental Biology

The mechanisms governing cell fate specification involves gradients of paracrine factors that regulate gene expression; such factors are called:

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#Question id: 15281

#Unit 5. Developmental Biology

What is morphogen?