Assertion : Amniocentesis is a process of foetal sex determination.
Reason : Metabolic errors and other diseases can be diagnosed prenatally by this process.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
B.
If both assertion and reason are true but reason is not the correct explanation of assertion
Amniocentesis is a foetal sex determination and disorder test based on the chromosomal pattern in the amniotic fluid surrounding the developing embryo. It withdraws a sample of the amniotic fluid surrounding the embryo in the uterus by piercing the amniotic sac through the abdominal wall. Amniotic fluid drawn from the uterus contains cells from the embryo (mostly shed from the skin). Cell cultures enable chromosome patterns to be studied so that prenatal diagnosis of chromosomal abnormalities (such as Down's syndrome) can be made. Metabolic errors and other diseases such as spina bifida, can also be diagnosed prenatally from the biochemistry of the cells.
Contraceptive oral pills help in birth control by
killing the sperms in uterus
preventing implantation
preventing ovulation
both (b) and (c)
In assisted reproductive technology where gametes have been fertilized in vitro, which of the following is practicable for embryo transplantation in Fallopian tube
Only embryo up to 8 blastomeres if zygote is not transplanted.
Only zygote is transplanted not embryo
Either embryo or zygote with 8 blastomere phase transplanted
Morulla with 8-24 celled stage is transplanted in Fallopian tube.
Which one of the following pairs is not correctly matched
Streptomyces - Antibiotic
Serratia - Drug addiction
Spirulina - Single cell protein
Rhizobium - Biofertilizer
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with
no spleen
hare-lip
extra fingers and toes
underdeveloped limbs.
The crystal of lead zirconate is a key component of
electroencephalography
electrocardiography
magnetoencephalography
sonography
In a population, unrestricted reproductive capacity is called
biotic potential
fertility
carrying capacity
birth rate
Oral contraceptive pill is composed of
oestrogen and progesterone
oestrogen and testosterone
progesterone and testosterone
oestrogen and growth hormone
One of the legal methods of birth control is
abortion by taking an appropriate medicine
by abstaining from coitus from day 10-17 of the menstrual cycle
by having coitus at the time of day break
by a premature ejaculation during coitus
Which of the following cannot be detected in a developing foetus by amniocentesis?
Klinefelter's syndrome
Sex of the foetus
Down's syndrome
Jaundice
