Question # 1

The chromatids repel each other during.

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Leptotene

Zygotene

diplotene

Pachytene

Which pair of chromosome fails to segregate in down's syndrome.

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7th

15th

19th

21st

The polymerase chain reaction was developed in 1983 by

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Kary B. Mullis

Gottlieb Haberiandt

Theodore M. Klein

Craig venter

Sperm are formed in.

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Vas deferens

Collecting ducts

Seminiferous tubules

Epididymis

From beginning of the 3^rd month of pregnancy the human embryo is referred to as the

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Foetus

Kid

Kitten

CUb

Blue cone monochrome may is an X linked trait is which.

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Red cone cells are absent

Green cone cells are absent

Both red and green cone cells are absent

Blue cone cells are absent

DNA was discovered in

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1869

1864

1961

1972

During progeny luteotropic hormone LTH and placental lactogen stimulate Mammary development in preparation for.

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Gestation

Lactation

Miscarriage

After birth

The disease caused due to destruction of adrenal cortex is.

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Cushing

Diabetes

Addison

Alzheimer

In Pakistan among the animals declared extinct is

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White headed duck

Marbled teal

Houbara Bustard

Crocodile

Among the birds Drawin collected 13 types of

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Finshes

Robins

Ferrets

Pterodactyls

How many type of receptors are present in skin.

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Three

Six

Five

Two

The stabbing pain in leg is

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Arthritis

Herniation

Sciatica

Spondylosis

A gene with multiple phenotypic effect is.

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Polygenic

Bombay type

Pleiotropic

Monogenic

Fruit ripening is due to the production of.

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Auxins

Cytokinin

Gibberellin

Ethane

The most toxic substance routinely found in the blood are metabolities of what type of molecule?

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Proteins

Carbohydrates

Nucleic acids

Fats

Rapid aging and less resistance to environmental stress and diseases are limitations of.

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Parthenocarpy

Cloning

Phototropism

Verbalization

Adult transgenic tobacco plants glowed when sprayed with the substrate

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Luciferon

Luciferin

Luciferol

Luciferase

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