Question # 1

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

Pairing of homologous chromosomes for tetrad formation starts at.

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Leptotene

Zygotene

Diplotene

Pachytene

Which one of the following is not an unpaired bone.

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Mandible

Vomer

Nasal

Sphenoid

With in the ovary , progestetrone is produced by the:

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Corpus albicans

Corpus Luteum

Tertairy follicles

Primary follicles

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

A disease which causes immobility and fusion of vertebral joint is called.

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Disc slip

Sciatica

Arthritis

spondylosis

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

ADH affects which part of Nephron.

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Walls of collecting duet

Glamerulus

Walls of loop of Henle

Proximal convuleted tubule

V-shaped chromosomes are called.

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Acrocentric

Metacentric

Telocentric

submetacentric

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

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Leptotene

Zygotene

Pachytene

Diplotene

Different alleles of a gene that are both expressed in heterozygous condition are called.

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codominant

Over dominant

Complete dominant

Incomplete dominant

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

The animals that lay shelled eggs to protect the developing embryo are called.

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Oviparous

Ovovlviparous

Viviparous

Egg laying mammals

The period of life cycle of cell between two consecutive divisions is termed as.

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Resting phase

Inter phase

G1 phase

G2 Phase

The gene for blue opsin is present on autosome

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1

3

5

7

The individuals called universal recipients have.

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A blood group

B blood group

Ab blood group

O blood group

Perhaps the most fragile of all the biomes, because of its short growing season is.

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Tundra

Desert

Grass land

Temperate deciduous forest

The electrical potencial of cell membrane of meuron when it is not transmission any signal is called ___________

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Resting membrane potencial

Action potencial

Propagation of impulse

Synapse

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