A 16 weeks pregnant woman, who already has a son with haemophilia, visits a genetic counsellor to know about the genetic health of her second baby.The diagnostic test that the genetic counsellor refers to the woman would be:
Correct answer: D. Amniocentesis
- A. Ultrasound
- B. Gene therapy
- C. Tissue culture
- D. Amniocentesis
Explanation
The correct answer is amniocentesis. Amniocentesis is a diagnostic test typically performed between 15 and 20 weeks of pregnancy. It involves taking a small sample of the amniotic fluid surrounding the fetus, which contains fetal cells that can be analyzed for genetic conditions such as haemophilia.Ultrasound is not suitable for detecting genetic conditions; it is used for visualizing the fetus and assessing its development. Gene therapy is a treatment method and not used for diagnosis. Tissue culture is a laboratory technique and not applicable for prenatal genetic testing.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Embryonic Development
Embryonic development begins after fertilization with cleavage and formation of the morula and blastula, followed by gastrulation and the establishment of germ layers. It includes organ formation, tissue differentiation and early growth, rather than the later increase in size associated with postnatal development.
Practise Growth and Development
230 free Growth and Development MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Embryonic Development questions
Following are some of the events that occur during the development of animals.The structures formed during the event X are
The option which characterises apomixis in the flowering plants is
In an experiment, a cell was isolated from an unknown embryo at four-cell stage and allowed to divide. Even after repeated divisions, this isolated cell did not develop into a complete animal.The embryo used in the above experiment could be of a:
Suppose a human egg is fertilised by a sperm. If, immediately after fertilisation,the zygote is divided into two separate cells, then this process would result in
In a chick embryo, somites are formed from
In angiosperms, during the development of male gametophyte the generative cell divides and forms