(a) 1 : 3
(b) 3 : 1
(c) 1 : 1
(d) 2 : 1
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A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
(a) tallness is the dominant trait
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If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant, (rr YY) the seeds produced in F1 generation are
(a) round and yellow
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A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers.
(c) The genetic make-up of the tall parent can be depicted as TtWW Since all the progeny bore violet flowers, it means that the tall plant having violet flowers has...
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In the experiment it is found that 2.0769 gram of pure X produce 3. 6769 gram of pure x2o5 the number of mole of X is
The balanced equation for the above reaction is 2 X + 5/2 O2 → X2O5 Now the mass of oxygen using law of conservation of mass = 3.6769 - 2.0769 Hence mass of Oxygen...
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‘Both a short day plant and a long day plant can flower simultaneously in a given place’. Explain.
The flowering response in short-day plants and long-day plants is dependent on the durations for which these plants are exposed to light. The short-day plant and long day plant can...
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Which of the following statements are true for pure substances? (i) Pure substances contain only one kind of particles
(b) (i) and (iii)
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A progeny of F1, is crossed with the homozygous recessive parent. What is this cross called? Work out how is it useful?
When a progeny of F1 is crossed with the homozygous recessive parent, it is called test cross. Such a cross is useful to determine the genotype of an unknown i.e.,...
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In order to obtain the F1 generation, Mendel pollinated a true-breeding, say, tall plant with a true-breeding dwarf plant.
Genotype of 50% of the offspring would resemble one parent and the rest the other parent. All the F1 offsprings of the cross are heterozygous so allowing self pollination is sufficient to...
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In one of his experiments with pea plants Mendel observed that when a pure tall pea plant is crossed with a pure dwarf pea plant,
(a) The dwarf traits of the plants is not expressed in the presence of the dominant tall trait. (b) In the F2 generation, both the tall and dwarf traits are present in...
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If we cross-bred tall (dominant) pea plant with pure bred dwarf (recessive) pea plant,
(i) Tall (ii) 3:1 (iii) Dwarf Reason: Being a recessive trait, dwarfness can only be expressed in the absence of dominant trait/ in its pure form.
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