Question # 1

When expression of a biological character is observed in variable intensity, it is due to the efect of:

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Multiple alleles

Codominance

Epitasis

Polygenic inheritance

Acute forms of arthritis usually result from

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Bacterial invasion

Viral inversion

fungal invasion

Severe injury

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

Osteomalacia includes a number of disorders in which bones receive inadequate

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Water

Oxygen

Mineral

Blood

What will occur if a drug at the neuromuscular junction blocks the receptors sites on the post-synaptic membrane?

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Inhibition of Acetylchlorine release

Muscle contraction

Muscle paralysis

Release of calcium ions

In ascidian fertilized egg, yellow cytoplasm gives rise to

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Larval epidermis

Muscle cells

Notochord

Gut

The number of human spinal nerves is:

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24

50

62

64

Who proposed the term 'Niche' in ecology.

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Haeckel

Grinnell

Elton

Darwin

How many different kinds of the gametes will be formed by an ndividual , who is hetrozygous for four gene pairs:

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8

16

20

30

Human cells have 46 chromosomes consisting of

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20 pairs

21 pairs

22 pairs

23 pairs

Pinus wallichiana pinus roxbugil Abies pindrow picea smithiana Cederous deodara are plants of

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Coniferous alpine and boreal forests

Temperate deciduous forests

Tropical rain forests

Grassland ecosystem

Bowed legs and deformed pelvis are the symptoms of which disease in children.

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Rickets

Disc slip

Sciatica

Haematoma

A monochromat can perceive

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Three colours

Yellow colours

Only ane colour

Two colours

The interaction between different genes occupying different loci is

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Pleiotropy

Epistasis

Bombay phenotype

Linkage

Which animal shows digitigrade mode of locomotion.

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Bear

Dear

Rabbit

Horse

When will call embryo a fetus.

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After 2 months

After 3 moths

After 5 moths

After 4 months

Inheritance of skin colour in man is controlled by eight pairs of genes , which are:

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Linked

Codominent

Multiple alleles

Assorting independently

The Syndrome which is an example of trisomy of the sex chromosome is

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Turner's syndrome

Down's syndrome

Klinefelter's syndrome

Tay-Sach's syndrome

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