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

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

• Permian

• Jurassic

• Cambrian

• Ordovician

Meniere’s disease is associated with

• Ear

• Eye

• Nose

• Throat

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

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

• Adenine

• Guanine

• 5-bromouracil

• 5-methyl cytosine

Gonads are derived from

• Ectoderm

• Mesoderm

• Endoderm

• None of the above

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

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

• Guanine

• Uracil

• thymine

• Cytocine

Depo-provera refers to

• Injectible contraceptive

• Intra uterine device

• Implant

• Oral contraceptive