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Current Affairs January 2024

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The number and appearance of chromosomes in the nucleus of a eukaryotic cell is called as

A. Karyotype

B. Genotype

C. Phenotype

D. Cytogenetics

Correct Answer :

A. Karyotype


Related Questions

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At the end of meiosis I, the Oocyte yields

A. Secondary Oocyte and first polar body

B. First polar body

C. Secondary Oocyte

D. Second polar body

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Fertilization is fusion of ..

A. Diploid spermatozoan with diploid ovum to form diploid zygote

B. Haploid spermatozoan with diploid ovum to form diploid zygote

C. Diploid spermatozoan with haploid ovum to form diploid zygote

D. Haploid spermatozoan with haploid ovum to form diploid zygote

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In uterus, endometrium proliferates in response to ...

A. Relaxin

B. Oxytocin

C. Progesterone

D. Oestrogen

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Part of fallopian tube closest to ovary is

A. Infundibulum

B. Cervix

C. Ampulla

D. Isthmus

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Fertility in women may be impaired by

A. Hypertension

B. Gall stones

C. Obesity

D. Short stature

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What is Hirsuitism in females? (Usually with Poly cystic ovarian disease)

A. Unusually tall

B. Abnormal growth of facial and body hair

C. Abnormal voice

D. Short stature

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Which cells provide nutrition to the sperms?

A. Sertoli cells

B. Leydig cells

C. Crypt cells

D. Semniferous tubules

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Cu ions released from copper-releasing intra uterine devices (iuds)

A. Prevent ovulation

B. Suppress sperm motility

C. Prevents implantation of embryo

D. Kills sperms

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Pregnancy begins with implantation of

A. Embryo

B. Fertilized ovum

C. Blastopore

D. Blastocyst

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When there is no fertilization, the corpus luteum ...

A. Stops secreting progesterone

B. Changes to corpus albicans

C. Starts producing progesterone

D. Begins next cycle

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Name the pituitary hormone that regulates sertoli cells

A. Prolactin

B. LH

C. FSH

D. Oxytocin

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Normal sperm count is

A. 40 to 300 million per ml

B. 10 to 20 million per ml

C. < 10 million per ml

D. 200 million per ml

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During ovulation, for favourable sperm travel oestrogen causes

A. Cervical mucus to become stretchy and clear

B. Less cervical mucus production

C. Tenderness of cervix

D. Slight vaginal bleeding

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Cell division that occurs in zygote is called

A. meiosis

B. Mitosis

C. Cleavage

D. Differentiation

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Failure of the brain to grow in the foetus may result in:

A. Plagiocephaly

B. Craniostenosis

C. Anencephaly

D. Microcephaly

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Which one occurs first in the human embryo

A. Neurogenesis

B. Cardiogenesis

C. Hepatogenesis

D. Osteogesis

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Temperature in scrotum necessary for sperm formation is usually ...

A. 2°c above body temperature

B. 2° c below body temperature

C. 4°c above body temperature

D. 4° c below body temperature

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Which part of the ovary act as an endocrine gland in human beings

A. Stroma

B. Vitteline membrane

C. Graffian follicle

D. Epithelium

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An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....

A. Edwards syndrome

B. Klinefelters syndrome

C. Intersex

D. Downs syndrome.

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Prostate gland produces a secretion for ...

A. Attracting sperms

B. Stimulating sperm activity

C. Inhibiting sperm activity

D. None of the above

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Sertoli cells are found in

A. Seminiferous tubules

B. Ovaries

C. Prostate gland

D. Semen

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Which part of the foetus is developed from mesoderm?

A. Heart and notochord

B. Heart and brain

C. Spinal cord and notochord

D. Brain and notochord

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Embryonic connective tissue is formed from ..

A. ectoderm

B. endoderm

C. Mesenchyme

D. Mesogloea

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Tunica albuginea is related to

A. Prostate gland

B. Pituitary gland

C. Hypothalamus

D. Testes

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Fertilization of the ovum takes place in

A. Ovary

B. Uterus

C. Fallopian tube ampulla

D. Cervix

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Combined Oral contraceptives prevent pregnancy by

A. Tubal block

B. Preventing spermatogenesis

C. Forming a barrier between the ovum and sperm

D. Suppressing ovulation

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Haemophilia is more common in males because it is a

A. Recessive character carried by y-chromosome

B. Dominant character carried by y-chromosome

C. Dominant trait carried by x-chromosome

D. Recessive trait carried by x-chromosome

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Membrane that gives protection to embryo from external shocks is

A. Amnion

B. Allantois

C. Chorion

D. Placenta

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Increase in basal body temperature in the middle of menstrual cycle is a sign of

A. Fertilization

B. Onset of menstruation

C. Menopause

D. Ovulation

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Corona radiata is held by...

A. Mucopolysaccharide

B. Oligosaccharide

C. Lipopolysaccharide

D. Lipoprotein