Question # 1

The chances of teenage mother having down's syndrome child is.

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One in one hundred

One in many thousand

One in one thousand

One in ten thousand

Chromosomes appear inside the nucleus at the time of.

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Cell division

Cell maturation

Cell elongation

Cell differentiation

A nerve is

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Collection of neurons

Bandle of axons or dendrites

Connection of dendrites

Bundle of exon of dendrites bounded by connection

The animals which are capable of varying degrees of endothermic heat production but generally do not regulate their body temperature within a narrow range

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Ectotherms

Endotherms

Heterotherms

Homotherms

Innate behavior is all but;

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Heritable

Intrinsic

Sterotypic

Flexible

At cytokinesis in plants a membrane structure phragmoplast is formed from vesicles which originate from

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Lysosomes

Centrioles

Golgi complex

Glyoxisomes

Digitigrade mammals tend to walk on their

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Soles

Digits

Tips of toes

None of these

PSC 101 has antibiotic resistance gene for.

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Tetracycline

Neomycin

Ampicillin

Ergotine

Which of the following is not Synthes lazed is liver

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Urea

Urine

Uric acid

Albumin

In non disjunction, chromosome's fail to segregate during.

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Prophase

Metaphase

Anaphase

Telephase

Th elateal walls of the chest cavity of man are composed of the:

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Ribs

Intercostals Muscles

Ribs and intercoastal muscles

Ribs ,Intercostals Muscles & diaphragm

Hypoblast is mainly presumptive

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Endoderm

Mesoderm

Ectoderm

Blastoderm

Auxins promote growth of roots from

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Cutting

Calluses

Both a & b

Layering

Bombay phenotype is an example of.

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Pleiotropy

Probability

dominance

epistasis

Human cells contain types of tRNA molecules.

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20

45

195

300

The term niche was first proposedly joseph Grinnell an American.

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Embryologist

Ecologist

Ornithologist

Physiologist

G₁ is time between the end of mitosis and initiation of DNA synthesis also called as

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Pre-DNA synthesis phase

DNA synthesis phase

Post-DNA synthesis phase

None of these

Galls are growth on a plant that are induced by

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Ticks

Protozoons

Parasites

Fungi

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