When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

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#Question id: 300

#Unit 1. Molecules and their Interaction Relevant to Biology

Hydrogen bonding occurs in molecules when ___________________.

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#Question id: 10414

#Unit 6. System Physiology – Plant

Plants have evolved with multiple photoreceptors, Phytochrome is one of them. Which of the following statements is incorrect about these photoreceptors?

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#Question id: 14482

#Unit 13. Methods in Biology

In a horse race the odds in favour of four horses H1, H2, H3, H4 are 1 : 3, 1 : 4, 1 : 5; 1 : 6 respectively not more than one wins at a time. Then the chance that one of them wins is

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#Question id: 20024

#Unit 13. Methods in Biology

Precipitation reaction are recognise by the formation of

a) Lattice

b) Agglutination

c) Ordered structure of antigen and antidody

d) Antibody must be bivalent

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#Question id: 19482

#Unit 12. Applied Biology

It has been proposed that the DNA-protein complex forms