Question # 1

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

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Prophase

Metaphase

Anaphase

Telephase

How many million nucleotides are in DNA of typical human chromosome

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140

160

180

200

Which one of the following would cause the hardy-weinberg principle to be inacurate?

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The size of the population is very large.

Individual mate with one another at random

Natural selection is present

There is no source of new copies of alleles from outside the population

An essay on the principle of population was published by

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Darwin

Wallace

Malthus

Linnaens

The incidence of calcium oxalate type stones are.

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40%

50%

60%

70%

Oxygen carryiing capacity of blood does not depend upon:

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Particle pressure of CO₂

Particle pressure of O₂

Height from sea level

Quantity of blood

Adult transgenic tobacco plants glowed when sprayed with the substrate

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Luciferon

Luciferin

Luciferol

Luciferase

In nature P 730 to P 660 conversion occurs in the

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Day

Dark

Evening

Dawn

The removal of apex release that lateral buds from the apical dominance. It is called

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Inhibitory effect

Compensatory effect

Apical dominance

Reproduction

Which is the most important mechanism for water loss from the body?

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Excretiong in urine

Sneezing

Sweating

Eleminatin in feces

Antidiuretic hormone is also called

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Oxytocin

ACTH

Vasopressin

Both a & b

Luteinizing hormone induces

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Flowering

Ovulation

Vernalisation

Menopause

During gastrulation the blastoderm splits into two layers, an upper layer of cells is called.

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Hypoblast

Area pellucida

Epiblast

Area Opaca

Thick filament in myofibril is made up of

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Myosin

actin

Tropomyosin

Troponin

The most threatened areas on the earth have been reduced to 44% of their original extent are

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Tropical rain forests

Temperate rain forests

Carbiniferous forests

Deciduous rain forests

Abdomen has a peritoneal cavity lined by a thin epithelium called

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Pericardium

Peritoneum

Scrotal sac

Pleura

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

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XXY

XXXY

XO

XYY

Germ cells in the ovary produce many

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Spermatogonia

Zoospores

Zygospores

Oogonia

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