Question # 1

In which developmental stage, germ layers are formed.

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Cleavage

Blastula

Gastrula

Organogenesis

Awoman with normal colour vision, whose father was red-green colour blind, married a red-green colour-blind man. What is the probality of her first-born child being red-green colour blind?

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1.0

0.75

0.50

0.025

Karyokinetic involves division of.

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Cell

Nucleus

Cell membrane

Cytoplasm

In myelinated neurons, the impulse jumps form node to node and is called.

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Saltatory impulse

synapse

Nerve impulse

synapsis

Tundra ecosystem is located on Mountains

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Kara-koram

Hindukush

Salman

Both a & b

The form of learning which involve a diminish of response to repeated stimuli

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Imprinting

Habituation

Insight learning

Large learning

Which one of the following condition is resulted from excess GH in adults?

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Cushing's disease

Acromegaly

Hyperthyroidism

Diabetes mellitus

Secretin is a hormone produced by

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Liver

Gut

Adrenals

Pancreas

The pigment free area that appears at the time of fertilization is called.

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embryo

Gray crescent

Yolk

White cytoplasm

Which trait is transmitted directly from an affected father to only his sons.

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X - linked

Y - Linked

x and y linked

Autosomal

Pentose sugar in the molecule of DNA is

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Ribose

Deoxyribose

Sucrose

Lactose

The uterine layer which is shed with each monthly cycle is:

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Endometrium

Perimetrium

Tunica albuginea

Myometrium

Temperate deciduous forest are located in Pakistan at.

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Chilas

Mian wali

Shogran

Sindh

The form of appearance of the trait is called.

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Genotype

Phenotype

Wild type

dominance

Cancer is caused mainly by mutation in.

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somatic cells

Sex cells

Malignant cells

Reproductive cells

Which one of the fllowing acts as a stop codon?

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UGG

UGC

UAG

UGU

Bats and humming bird are called

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Heterotherms

Ectotherms

Endotherms

poikilotherms

Highly condensed portions of the chromatin are called.

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Homochromatin

Heterochromatin

Euchromatin

Achromatin

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