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Consider the following statements:
1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.
2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.
3. ERVs play a role in cell-type differentiation and embryo development.
Which of the statements given above is/are correct?
- a)1 Only
- b)1 and 2 Only
- c)2 and 3 Only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:1. Endogenous Retroviruses (ERVs) a...
1. The first statement is incorrect. Endogenous Retroviruses (ERVs) are remnants of ancient viral infections, not bacterial infections, that have integrated into the genome of the host species. Retroviruses have the unique ability to integrate their genetic material into the host genome, a process not characteristic of bacteria.
2. The second statement is correct. Syncytins are indeed genes derived from ERVs and play a crucial role in the development of the placenta in mammals. These genes originally came from viruses and were integrated into the mammalian genome during evolution.
3. The third statement is also correct. ERVs do play a role in cell-type differentiation and embryo development. For example, MERVL-gag, derived from an ERV, is significant for the production of pluripotent stem cells which can differentiate into various cell types.
Therefore, the correct answer is Option C: 2 and 3 Only.
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Community Answer
Consider the following statements:1. Endogenous Retroviruses (ERVs) a...
Endogenous Retroviruses (ERVs) and their Role:
Endogenous Retroviruses (ERVs) are remnants of ancient viral infections that have become integrated into the genome of the host species. They make up a significant portion of the genome in many organisms, including humans.
Syncytins and Placental Development:
Syncytins are genes that have been derived from ERVs and are known to play a crucial role in placental development in mammals. These genes are involved in the formation of syncytial structures in the placenta, which are important for proper nutrient exchange between the mother and the developing fetus.
ERVs in Cell-Type Differentiation and Embryo Development:
In addition to their role in placental development, ERVs have also been found to play a role in cell-type differentiation and embryo development. Studies have shown that ERVs can regulate the expression of genes involved in these processes, influencing the development of different cell types and tissues in the embryo.
Conclusion:
In conclusion, both statements 2 and 3 are correct. Syncytins derived from ERVs are indeed essential for placental development in mammals, while ERVs also play a role in cell-type differentiation and embryo development. These findings highlight the important and complex interactions between ERVs and the host genome in shaping biological processes in organisms.
Endogenous Retroviruses (ERVs) are remnants of ancient viral infections that have become integrated into the genome of the host species. They make up a significant portion of the genome in many organisms, including humans.
Syncytins and Placental Development:
Syncytins are genes that have been derived from ERVs and are known to play a crucial role in placental development in mammals. These genes are involved in the formation of syncytial structures in the placenta, which are important for proper nutrient exchange between the mother and the developing fetus.
ERVs in Cell-Type Differentiation and Embryo Development:
In addition to their role in placental development, ERVs have also been found to play a role in cell-type differentiation and embryo development. Studies have shown that ERVs can regulate the expression of genes involved in these processes, influencing the development of different cell types and tissues in the embryo.
Conclusion:
In conclusion, both statements 2 and 3 are correct. Syncytins derived from ERVs are indeed essential for placental development in mammals, while ERVs also play a role in cell-type differentiation and embryo development. These findings highlight the important and complex interactions between ERVs and the host genome in shaping biological processes in organisms.
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Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
Solutions for Consider the following statements:1. Endogenous Retroviruses (ERVs) are remnants of ancient bacterial infections that have integrated into the genome of the host species.2. Syncytins, genes derived from ERVs, are essential for placental development in mammals.3. ERVs play a role in cell-type differentiation and embryo development.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
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