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
Correct answer: C. Identical twins
- A. Fragmentation
- B. Fraternal twins
- C. Identical twins
- D. Parthenogenesis
Explanation
The correct answer is identical twins. When a single zygote divides into two separate cells after fertilization, it results in identical twins, as both cells develop into genetically identical individuals. Fragmentation is unrelated to human zygote division, as it pertains to organisms that reproduce asexually. Fraternal twins result from two different eggs being fertilized by different sperm. Parthenogenesis is an asexual reproduction process that does not involve fertilization and is not relevant to human reproduction.
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
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:
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 a chick embryo, somites are formed from
In angiosperms, during the development of male gametophyte the generative cell divides and forms
The given diagram shows the experiment of embryonic induction performed by Spemann and Mangold.After analysing the result of experiment, the structure that was designated by Spemann asprimary organiser is the