Biology - Mock Test 132

Question 1311

Exchange of paternal and maternal chromosome material during cell division is ?

A) Crossing over B) Bivalent formation C) Dyad formation D) Synapsis

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Question 1312

During which stage the chromosomes first become visible?

A) Anaphase B) Metaphase C) Prophase D) Telophase

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Question 1313

Crossing over occurs in ?

A) Pachytene B) Zygotene C) Leptotene D) Diplotene

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Question 1314

During mitosis ER and nucleolus begin to disappear at ?

A) Early prophase B) Late prophase C) Early metaphase D) Late metaphase

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Question 1315

During meiosis I, the number of chromosomes is ?

A) Halved B) Tripled C) Doubled D) Quadrupled

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Question 1316

DNA replication takes place during ?

A) S - phase B) G2 - phase C) G1 - phase D) Prophase

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Question 1317

Cytoplasmic division of a cell is called ?

A) Cell plate formation B) Cytokinesis C) Mitosis D) Synapsis

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Question 1318

Crossing-over results in ?

A) Recombination of linked alleles B) Dominance of alleles C) Segregation of alleles D) Linkage between genes

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Question 1319

Centromere is a constituent of ?

A) Ribosome B) ER C) Chromosome D) Mitochondrion

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Question 1320

Which of the following cellular structures always disappears during mitosis and meiosis?

A) Plasma membrane B) Nucleolus and nuclear envelope C) Plastids D) none of these

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