Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of the resulting offspring undergo chromosome duplication resulting fertile plants. The fertile offspring are known as

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#Question id: 7484

#General Aptitude

The time gap between the two instants, one before and one after 12:00 noon, when the angle between the hour hand and the minute hand is 11°,is

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#Question id: 27159

#Unit 1. Molecules and their Interaction Relevant to Biology

This event can cause a damage to the hypothalamus portal system

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#Question id: 11678

#Unit 7. System Physiology – Animal

Increased antidiuretic hormone (ADH) secretion is likely after ________.

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#Question id: 33379

#Unit 1. Molecules and their Interaction Relevant to Biology

Which amino acid is often observed at the C-cap & N cap both positions

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#Question id: 3820

#Unit 3. Fundamental Processes

Meselson and Stahlʹs experiments involved growing E. coli on a medium containing 15N (heavy nitrogen) which increased the density of the bacterial DNA. Cells were then grown on a medium containing only 14N. DNA samples were obtained for analysis after one, two and three rounds of replication (generations) and centrifuged on a density gradient. The double-helical DNA forms bands in the gradient depending on its density. How many bands did Meselson and Stahl see after two generation of cells were grown on the 14N medium?