Question # 1

Which one is absent in animal cells.

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spindle

Centriole

Chromatids

Phragmoplast

In turner syndrome the affected person have set of chromosomes.

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XO

XXY

XYY

XXO

Shape of the plant cell does not change greatly compared with an animal cell because it is surrounded by a rigid

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Cell membrane

Capsule

Sheath

Cell wall

Synapsis occurs duiring.

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Pachytene

Leptotene

Zygotene

Diplotene

The interphase of meiosis lacks the stage.

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G0

G1

G2

S

Nuclear membrane disorganizes at the beginning of

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Prophase 1

Metaphase 1

Anaphase 1

Telophase 1

Cell cycle involves.

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Growth of cell

Replication of DNA

Cell division

None of these

The prophase stage in which the chromosomes become visible, shorten and thick.

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Leptotene

Zygotene

Pachytene

Diphotene

At cytokinesis in plants a membrane structure phragmoplast is formed from vesicles which originate from

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Lysosomes

Centrioles

Golgi complex

Glyoxisomes

Meiosis II is just like the

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Amitosis

Mitosis

Replacement

Regenerations

Cancer is caused mainly by mutation in.

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somatic cells

Sex cells

Malignant cells

Reproductive cells

The kinetochore fibres of spindle attach to the kinetochore region of chromosome and align them at the equator of the spindle forming

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Equatorial plate

Metaphase plate

Central plate

Both a & b

What are significant happening of meiosis.

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Crossing over

Random assortment of chromosome

Linkage

Crossing over and random assortment of chromosomes

Which of the following chromosome abnormalities lead to tallness, aggressiveness mental defect and anti social behavior.

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XXY

XXXY

XO

XYY

G₁ is time between the end of mitosis and initiation of DNA synthesis also called as

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Pre-DNA synthesis phase

DNA synthesis phase

Post-DNA synthesis phase

None of these

Chromatin network is visible during

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Interphase

Prophase

Anaphase

Metaphase

Interphase can further be divided into

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G₁-phase,S-phase and G₂-phase

G₁-phase,G₂-phase and G₃-phase

S₁-phase,S₂-phase and S₃-phase

S₁-phase,G-phase and S₂-phase

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