MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: B. Having two identical alleles at a locus
Explanation:
A homozygous individual may be dominant or recessive.
Both homologous chromosomes carry the same allele.
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Correct Answer: B. A solution containing more dissolved solute than equilibrium normally allows
Explanation:
Supersaturated solutions are metastable.
Crystallization can be triggered by a seed crystal or disturbance.
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Correct Answer: C. Having two different alleles at a locus
Explanation:
A heterozygote carries two allele forms.
Its phenotype depends on their interaction.
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Correct Answer: C. Substances with similar polarity tend to dissolve one another
Explanation:
Polar solvents favor polar or ionic solutes.
Nonpolar solvents favor nonpolar solutes.
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Correct Answer: D. Having two different alleles at a locus
Explanation:
A heterozygote carries two allele forms.
Its phenotype depends on their interaction.
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Correct Answer: D. A mixture with dispersed particles intermediate between solution and suspension size
Explanation:
Colloidal particles remain dispersed for long periods.
They can scatter light through the Tyndall effect.
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Correct Answer: A. Having two different alleles at a locus
Explanation:
A heterozygote carries two allele forms.
Its phenotype depends on their interaction.
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Correct Answer: A. Scattering of light by colloidal particles
Explanation:
True solutions generally do not show visible light scattering.
Colloids make a light beam visible.
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Correct Answer: B. The two alleles of a gene separate during gamete formation
Explanation:
Each gamete receives one allele from a pair.
Fertilization restores the pair.
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Correct Answer: B. 2.0 L
Explanation:
Use P1V1=P2V2.
V2=100×4.0/200 = 2.0 L.
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Correct Answer: C. The two alleles of a gene separate during gamete formation
Explanation:
Each gamete receives one allele from a pair.
Fertilization restores the pair.
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Correct Answer: C. 3.0 L
Explanation:
Use V1/T1=V2/T2.
V2=2.0×450/300 = 3.0 L.
