The number of chromosomes present in sperms
46
23
23 + X
23+ Y
Correct Answer :
B. 23
Related Questions
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
Failure of the brain to grow in the foetus may result in:
Plagiocephaly
Craniostenosis
Anencephaly
Microcephaly
An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....
Edwards syndrome
Klinefelters syndrome
Intersex
Downs syndrome.
Total numbers of ovum released in the life time of a woman is approximately
40
400
4000
20000
The number of chromosomes present in sperms
46
23
23 + X
23+ Y
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
The functional unit of testis of man is ...
Uriniferous tubules
Malpighian tubules
Seminiferous tubules
Acini or lobules
Pregnancy begins with implantation of
Embryo
Fertilized ovum
Blastopore
Blastocyst
When is the best time to get FSH levels checked?
Day 7 of the menstrual cycle
Day 21 of the menstrual cycle
Day 3 of the menstrual cycle
Day 14 of the menstrual cycle
Human female reaches menopause at the age of about ...
25 years
35 years
50 years
70 years
In which phase of menstrual cycle ovulation occurs in
Luteal
Menstrual
Proliferative
Secretory
Which of the following statements is most correct about the human menstrual cycle.
The menstrual cycle in all women is a 28 day cycle
Ovulation always occurs at the midpoint of the menstrual cycle
A high body temperature indicates ovulation is occurring
The menstrual cycle is an endocrine cycle regulating reproductive physiological changes
Prostate gland produces a secretion for ...
Attracting sperms
Stimulating sperm activity
Inhibiting sperm activity
None of the above
Level of estrogen and progesterone are minimum at the time of
Follicular phase
Ovulation
Secretory phase
Onset of menstrual phase
Immediately after ovulation, the ovum is covered by a membrane called
Chorion
Zona pellucida
Corona radiata
Vitelline membrane
Menstrual phase is followed by .
Luteal phase
Follicular phase
Fertilization
Implantation
Corpus luteum secretes
Lh
Estrogen
Progesterone
Fsh
Haemophilia is more common in males because it is a
Recessive character carried by y-chromosome
Dominant character carried by y-chromosome
Dominant trait carried by x-chromosome
Recessive trait carried by x-chromosome
Acrosome occurs in the sperm in
Tail part
Behind the nucleus
Middle piece
Tip
Cryptorchidism is ...
Nondescent of testes in scrotum
Nondevelopment of testes
Removal of scrotum
Breaking connection of vas deferens
Which layer of embryo is formed first
ectoderm
Mesoderm
Endoderm
Mesenchyma
In human embryo, the digestive system develops from the
Epithelium
Mesoderm
Endoderm
Ectoderm
Human placenta is
Endothelial
Haemochorial
Epitheliochorial
Syndesmochorial
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
In ectopic pregnancy, foetus grows in ...
Vagina
Fallopian tube
Uterus
Body cavity
Medical termination of pregnancy is safe till how many weeks of pregnancy?
10 weeks
12 weeks
20 weeks
22 weeks
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
Human eggs are
Mesolecithel
Microlecithel
Macrolecithel
Alecithel
During ovulation, for favourable sperm travel oestrogen causes
Cervical mucus to become stretchy and clear
Less cervical mucus production
Tenderness of cervix
Slight vaginal bleeding
Which one of the following is produced early in the life of a human female?
Relaxin
Oxytocin
Prolactin
Progesterone