Question # 1

The condensation of chromosomes is completed during:

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Telophase

Prophase

Anaphase

Metaphase

Who introduced Taxon of 'order' in classification?

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Caesalpino

John Ray

Tournefort

Rivinus

During the division phase the cell ................ into two.

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Split

Divide

Both

None

Necrosis is:

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Division of cells

Suicide of cells

Cell death by tissue damage

Weakness of cells

Which phase of meiosis is similar to mitosis?

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Prophase I

Telophase II

Meiosis I

Meiosis II

Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called:

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Sister chromosomes

Homologous Chromosomes

Non-sister chromatids

Sister chromatids

Example of Apoptotic process is ............... .

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Disappearance of tadpole tail

Disappearance of web human hand

Formation of fingers of hand

All of the above

Chromosomes become double during:

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G₁

G₂

G₀

S phase

Which of the following distinguishes meiosis from mitosis?

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The chromosome number is reduced

Chromosomes undergo crossing over

The daughter cells are genetically different from the parent cell.

All of the above

Who suggested the first system of classification of organisms?

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Al-Jahiz

Aristotle

John Ray

Averroes

Down's syndrome is case of .................. .

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Autosomy

Monosomy

Trisomy

Tetrasomy

During S-phase ..................... occurs.

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DNA replication

Protein synthesis

RNA transcription

Enzyme synthesis

The phase which can exist for life is:

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G₀

G₁

G₂

S phase

Uncoiling of chromosomes take place during:

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Anaphase

Telophase

Anaphase

Metaphase

the failure of replicated chromosomes to separate during meiosis is ............... .

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Disjunction

Non-disjunction

Both a & b

None

Specific enzymes are synthesized in:

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G₀

G₂

G₁

S phase

Which of the following stage of cell division is very different for animal and plant cells?

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Telophase

Metaphase

Anaphase

Cytokinesis

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