In context of amniocentesis, which of the following statements is incorrect?

A It can be used for detection of Down’s syndrome.
B It can be used for detection of cleft palate.
C It is usually done when a woman is between \(14-16\) weeks pregnant.
D It is used for prenatal sex determination.

Verified Solution

Answer & Solution

Correct Answer

(B) It can be used for detection of cleft palate.

Step-by-step Solution

Detailed explanation

(b) : Amniocentesis is fetal sex determination and disorder test based on the chromosomal pattern in the amniotic fluid surrounding the developing embryo. It can be used to determine the sex of the infant, to identify some abnormalities in the number of chromosomes and to detect certain biochemicals and enzymatic abnormalities. It is usually done when woman is \(14-16\) weeks pregnant. Cleft palate can be detected by ultrasound.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Which of the following represents the correct combination without any exception ?

Option	Characteristics	Class
\((a)\)	Sucking and circular mouth; jaws absent, integument without scales; paired appendages.	Cyclostomata
\((b)\)	Body covered with feathers; skin moist and glandular, fore-lims form wings; lungs with air sacs.	Aves
\((c)\)	Mammary gland; hair on body; pinnae; two pairs of limbs.	Mammalia
\((d)\)	Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord.	Chondrichthyes

NEET 2015 Medium

Arrange the following steps of somatic hybridisation in a correct sequence.
A. Digestion of cell walls.
B. Isolation of naked protoplasts.
C. Fusion of protoplasts to get hybrid protoplast.
D. Isolation of single cells from two different varieties of plants.
E. Growing of hybrid protoplast to form a new plant.
Choose the correct answer from the options given below :

NEET 2026 Medium

Explore more questions on app

From NEET

Match List I with List II:

\(\text{List - I (Ion)}\)	\(\text{List - II (Group Number}\) \(\text{in Cation Analysis)}\)
A. \(\text{Co} ^{2+}\)	(I) \(\text{Group - I}\)
B. \(\text{Mg} ^{2+}\)	(II) \(\text{Group - III}\)
C. \(\text{Pb} ^{2+}\)	(III) \(\text{Group - IV}\)
D. \(\text{Al} ^{3+}\)	(IV) \(\text{Group - VI}\)

NEET 2025 Medium

Explore more questions on app