Cri-du-chat syndrome in humans is caused by the
Trisomy of 21st chromosome
Fertilization of an xx egg by a normal y-bearing sperm
Loss of half of the short arm of chromosome 5
Loss of half of the long arm of chromosome 5
Correct Answer :
C. Loss of half of the short arm of chromosome 5
Related Questions
In which phase of menstrual cycle ovulation occurs in
Luteal
Menstrual
Proliferative
Secretory
Which part of the foetus is developed from mesoderm?
Heart and notochord
Heart and brain
Spinal cord and notochord
Brain and notochord
In human embryo, the digestive system develops from the
Epithelium
Mesoderm
Endoderm
Ectoderm
Amniotic fluid protects the foetus from ...
Shock
Abortion
Degeneration
Disease
Albinism is a congenital disorder resulting from the lack of which enzyme?
Tyrosinase
Xanthine oxidase
Catalase
Fructokinase.
Pregnancy test is confirmed by the presence of
Prolactin in urine
Relaxin in urine
H c g in urine
Fsh and lh in urine
Erythroblastosis foetalis is caused by fertilization between the gametes of
Rh -ve female and rh+ ve male
Rh+ ve female and rh -ve male
Rh+ ve female and rh+ ve male
Rh~ ve female and rh -ve male
Cu ions released from copper-releasing intra uterine devices (iuds)
Prevent ovulation
Suppress sperm motility
Prevents implantation of embryo
Kills sperms
When there is no fertilization, the corpus luteum ...
Stops secreting progesterone
Changes to corpus albicans
Starts producing progesterone
Begins next cycle
Epididymis is ...
A long coiled tube between vasa efferentia and vas deferens
Network of sinuses between seminiferous tubules and efferentia
Connection between vas deferens and seminal vesicle
Intermediate structure between the testis and vasa efferentia
Medical termination of pregnancy is safe till how many weeks of pregnancy?
10 weeks
12 weeks
20 weeks
22 weeks
Increase in basal body temperature in the middle of menstrual cycle is a sign of
Fertilization
Onset of menstruation
Menopause
Ovulation
Human placenta is
Endothelial
Haemochorial
Epitheliochorial
Syndesmochorial
Part of sperm that passes into ovum is
Tail
Acrosome
Head
Head, neck and middle piece
Pregnancy is ascertained by
Insemination
Copulation
Implantation
Capacitation
Combined Oral contraceptives prevent pregnancy by
Tubal block
Preventing spermatogenesis
Forming a barrier between the ovum and sperm
Suppressing ovulation
Correct sequence in embryonic development is ..
Fertilization -> zygote -> cleavage -> morula -> blastula -> gastrula
Fertilization -> zygote -> cleavage -> blastula -> morula -> gastrula
Fertilization -> zygote -> cleavage -> morula -> blastula -> gastrula
Fertilization -> zygote -> gastrulae -> morula -> blastula -> cleavage
Which cells provide nutrition to the sperms?
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
What is the best sperm extraction technique for men with obstructive azoospermia?
TESE - Microsurgical testicular sperm extraction
Percutaneous Epididymal Sperm Aspiration (PESA)
Intra cytoplasmic sperm injection ( ICSI)
Fine needle aspiration
Menstrual phase is followed by .
Luteal phase
Follicular phase
Fertilization
Implantation
Normal sperm count is
40 to 300 million per ml
10 to 20 million per ml
< 10 million per ml
200 million per ml
The embryonic stage that resembles a mulberry fruit is
Nerula
Gastrula
Morula
Blastula
The number and appearance of chromosomes in the nucleus of a eukaryotic cell is called as
Karyotype
Genotype
Phenotype
Cytogenetics
Hormones that control the growth and maturation of graffian follicle is
FSH - LH
FSH - ICSH
ACTH - LH
GH - ADH
What is the name of the inner lining of the uterus?
Myometrium
Endometrium
Epithelium
Endothelium
The pre fertilisation process stage of sperm before entry into the ovum is called as
Maturation
Insemination
Capacitation
Fertilization
Name the pituitary hormone that regulates sertoli cells
Prolactin
LH
FSH
Oxytocin
Sertoli cells are found in
Seminiferous tubules
Ovaries
Prostate gland
Semen
Cri-du-chat syndrome in humans is caused by the
Trisomy of 21st chromosome
Fertilization of an xx egg by a normal y-bearing sperm
Loss of half of the short arm of chromosome 5
Loss of half of the long arm of chromosome 5
Human embryo is referred to as fetus from beginning of
1st month of pregnancy
2nd month of pregnancy
3rd month of pregnancy
4th month of pregnancy