Question # 1

The chromatids repel each other during.

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Leptotene

Zygotene

diplotene

Pachytene

The condensation of chromosomes reaches to its maximum during.

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Pachytene

Zygotene

Leptotene

Diakinesis

In natural selection, the environment plays role affecting the proportions of gene in .

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Population

Community

Area

Blome

Apical dominance is cause by.

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Gibberellins

Cytokinins

Auxins

Ethene

Hemodialysis means

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Removing the blood

Cleaning the blood

Storing the blood

diluting the blood

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

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7th

15th

19th

21st

Shape of the plant cell does not change greatly compared with an animal cell because it is surrounded by a rigid

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Cell membrane

Capsule

Sheath

Cell wall

How many million nucleotides are in DNA of typical human chromosome

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140

160

180

200

In humans ,MSH(melanocyte-stimulating hormone) ___________

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Regulates primary skin color

Causes the thyroid to produce thyroxin

Governs the rate of tarming

Concentration is very low.

The hyphae of fungi are

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Phototactic

Chemotropic

Geotropic

Chemotactic

The actual location of place, where an organism lives is called its.

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Niche

environment

Habitat

Ecosystem

Which one is not a bone of axial skeleton

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Ribs

Sternum

Pelvic

Cranium

A respiratory protein which is present i all aerobic organism is.

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Haemoglobin

Cytochrome

Myoglobin

Cytochrone c

Hind brain includes the medulla pons and

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Cerebrum

Cerebellum

Thalamus

Amygdala

Armadillos, the armored mammals live only in

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Africa

America

Europe

Asla

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

Similarity in characteristics resulting from common ancestry is known as:

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Analogy

Homology

Evolutionary relationship

Phylogeny

Contractile ring in cytokinesis is formed by

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Tubulin

Actin and Myosin

Keratin

Cyclin

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