Question # 1

The pairing of homologous chromosomes is completed in

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Leptotene

Zygotene

Pachytene

Diplotene

With in the ovary , progestetrone is produced by the:

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Corpus albicans

Corpus Luteum

Tertairy follicles

Primary follicles

The basic difference betweenn spermatogenesis and oogenesis is that :

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During spermatogenesis two more polar bodies are produced

The mature ovum is haploid while the sperm is 1n

Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced

The stage that lasts for days, weeks or event years

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Zygotene

Leptotene

Pachytene

Diplotene

Crossing over and random assortment of chromosomes are two significant happenings of

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Mitosis

Amitosis

Meiosis

All a,b,and c

The microtubules of mitotic apparatus are composed of protein tubulin nd traces of.

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DNA

RNA

Lipids

Terpenoids

Karyokinetic involves division of.

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Cell

Nucleus

Cell membrane

Cytoplasm

Contractile ring in cytokinesis is formed by

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Tubulin

Actin and Myosin

Keratin

Cyclin

RNA and Protein called.

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Insulin

Tubulin

Actin

Myosin

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

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XXY

XXXY

XO

XYY

In non disjunction, chromosome's fail to segregate during.

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Prophase

Metaphase

Anaphase

Telephase

Synapsis occurs duiring.

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Pachytene

Leptotene

Zygotene

Diplotene

Apoptosis is.

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Division of cells

Death of cells by tissue damage

suicide of cells

Weakness of cells

The interphase of meiosis lacks the stage.

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G0

G1

G2

S

The stage of prophase that last for days, week or even year is.

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Leptotene

Zygotene

Pachytene

Diplotene

Monqolism is the other name of.

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Mongolism

Kline felter syndrome

Down's syndrome

Turner's syndrome

During which stage chromosomes are doubling

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G2 Phase

G1 phase

S-Phase

G0 Phase

Cell cycle involves.

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Growth of cell

Replication of DNA

Cell division

None of these

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