MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: D. Exchange of DNA between nonsister chromatids of homologous chromosomes
Explanation:
Crossing over occurs during prophase I.
It produces new allele combinations.
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Correct Answer: D. Reproduction involving one parent without gamete fusion
Explanation:
Asexual offspring are usually genetically similar to the parent.
Examples include binary fission, budding, and vegetative propagation.
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Correct Answer: A. Homologous chromosomes
Explanation:
Homologous chromosome pairs move to opposite poles.
Sister chromatids remain joined.
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Correct Answer: B. Homologous chromosomes
Explanation:
Homologous chromosome pairs move to opposite poles.
Sister chromatids remain joined.
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Correct Answer: C. Homologous chromosomes
Explanation:
Homologous chromosome pairs move to opposite poles.
Sister chromatids remain joined.
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Correct Answer: D. Sister chromatids
Explanation:
Meiosis II resembles mitosis.
Centromeres divide and chromatids separate.
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Correct Answer: A. Sister chromatids
Explanation:
Meiosis II resembles mitosis.
Centromeres divide and chromatids separate.
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Correct Answer: B. Sister chromatids
Explanation:
Meiosis II resembles mitosis.
Centromeres divide and chromatids separate.
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Correct Answer: C. A cell with one set of chromosomes
Explanation:
Gametes are usually haploid.
Their fusion restores the diploid state.
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Correct Answer: D. A cell with one set of chromosomes
Explanation:
Gametes are usually haploid.
Their fusion restores the diploid state.
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Correct Answer: A. A cell with one set of chromosomes
Explanation:
Gametes are usually haploid.
Their fusion restores the diploid state.
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Correct Answer: B. A cell with two sets of chromosomes
Explanation:
Diploid cells contain homologous chromosome pairs.
Most human body cells are diploid.
