An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....
Edwards syndrome
Klinefelters syndrome
Intersex
Downs syndrome.
Correct Answer :
B. Klinefelters syndrome
Related Questions
Correct sequence of hormone secretion from beginning of menstruation is ...
FSH, progesterone, estrogen
Estrogen, fsh, progesterone
FSH, estrogen, progesterone
Estrogen, progesterone, FSH
Highly sophisticated procedure of injecting sperm directly into the ovum is
GIFT
ZIFT
ICSI
IUI
The male hormone testosterone is secreted by
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
Mongolian idiocy due to trisomy in 21st chromosome is known as
Downs syndrome
Turners syndrome
Klinefelters syndrome
Triple x syndrome
Medical termination of pregnancy is safe till how many weeks of pregnancy?
10 weeks
12 weeks
20 weeks
22 weeks
The pre fertilisation process stage of sperm before entry into the ovum is called as
Maturation
Insemination
Capacitation
Fertilization
Cryptorchidism is ...
Nondescent of testes in scrotum
Nondevelopment of testes
Removal of scrotum
Breaking connection of vas deferens
Corona radiata is held by...
Mucopolysaccharide
Oligosaccharide
Lipopolysaccharide
Lipoprotein
In a 28 day menstrual cycle, ovulation occurs on ...
Day 1
Day 5
Day 14
Day 28
Approximately how long does it take for a spermatocyte to complete its differentiation into a spermatozoan in the testis?
7 days
70 days
7 months
70 hours
Villi of human placenta develop from ..
Chorion
Allantois
Yolk sac
Amnion
In humans female ovulation occurs during menstrual cycle
At the end of proliferative phase
At the beginning of proliferative phase
Before the end of secretary phase
In the middle of secretary phase
What is the name of the inner lining of the uterus?
Myometrium
Endometrium
Epithelium
Endothelium
Human embryo is enclosed by a sac called
Scrotum
Ericardium
Placenta
Amniotic sac
Secretion of testosterone is stimulated by
FSH
TSH
ICSH
ACTH
Fertilization is fusion of ..
Diploid spermatozoan with diploid ovum to form diploid zygote
Haploid spermatozoan with diploid ovum to form diploid zygote
Diploid spermatozoan with haploid ovum to form diploid zygote
Haploid spermatozoan with haploid ovum to form diploid zygote
The middle piece of the sperm contains
Protein
Nucleus
Mitochondria
Centriole
The number and appearance of chromosomes in the nucleus of a eukaryotic cell is called as
Karyotype
Genotype
Phenotype
Cytogenetics
Temperature in scrotum necessary for sperm formation is usually ...
2°c above body temperature
2° c below body temperature
4°c above body temperature
4° c below body temperature
What are the chances of a normal fertile couple having a baby in one year?
40%
80%
20%
50%
After ovulation graffian follicles turns into
Corpus luteum
Corpus albicans
Corpus callosum
Corpus artesia
The number of chromosomes present in sperms
46
23
23 + X
23+ Y
Membrane that gives protection to embryo from external shocks is
Amnion
Allantois
Chorion
Placenta
Identical twins are also known as ..
monozygotic twins
Dizygotic twins
Fraternal twins
Zygotic twins
In menstrual cycle the secretory phase is also known as
luteal phase and lasts for 6 days
Luteal phase and lasts for 13 days
Follicular phase and lasts for 13 days
Follicular phase and lasts for 6 days
Layers of ovum from outside to inside are .
Corona radiata, zona pellucida, vitelline membrane
Zona pellucida, corona radiata, vitelline membrane
Vitelline membrane, zona pellucida, corona radiata
Zona pellucida, vitelline membrane, corona radiate
Amniotic fluid protects the foetus from ...
Shock
Abortion
Degeneration
Disease
Fertility in women may be impaired by
Hypertension
Gall stones
Obesity
Short stature
An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....
Edwards syndrome
Klinefelters syndrome
Intersex
Downs syndrome.
Which layer of embryo is formed first
ectoderm
Mesoderm
Endoderm
Mesenchyma