Multiple Choice Questions

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What base is responsible for hot spots for spontaneous pint mutations?

  • Adenine

  • Guanine

  • 5-bromouracil

  • 5-methyl cytosine


C.

5-bromouracil

Hotspots in any region in a gene that mutates at very high frequency than the neighbouring regions of the gene.


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During which geological period of evolution did the greatest diversification of life occurred on the earth?

  • Permian

  • Jurassic

  • Cambrian

  • Ordovician


Specific radioactive identification of ribosomal RNA can be achieved by using C14 labelled

  • Guanine

  • Uracil

  • thymine

  • Cytocine


Gonads are derived from

  • Ectoderm

  • Mesoderm

  • Endoderm

  • None of the above


Meniere’s disease is associated with

  • Ear

  • Eye

  • Nose

  • Throat


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An occupational lung disease that occurs in humans, among those given below is

  • Dyspnea

  • Anthracosis

  • Atelectasis

  • Cyanosis


Which of the following is not correctly matched?

  • Trichomonas vaginalis – Leishmaniasis

  • Glossina palpalis – Sleeping sickness

  • Aedes agypti – Yellow fever

  • Culex pipceins – Filariasis


Depo-provera refers to

  • Injectible contraceptive

  • Intra uterine device

  • Implant

  • Oral contraceptive


The number of chromosomes in a primary spermatocyte is

  • Same as in spermatid

  • Same as in spermatogonium

  • Help of that in spermatogonium

  • Same as in secondary spermatocyte


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The portion of the endometrium that covers the embryo and is located between the embryo and the uterine cavity is the

  • Decidua basalis

  • Desidua umbilicus

  • Desidua capsularis

  • Deciduas functionalis