Software Development Exam > Software Development Questions > When the prospective neurons from an early ga...
Start Learning for Free
When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena.
P. The early gastrula show conditional development whereas the late gastrula shows autonomous development.
Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development.
R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined.
S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified.
Which of the conclusions drawn above are correct?
- a)P and Q
- b)P and R
- c)P and S
- d)Q and R
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
When the prospective neurons from an early gastrula of a frog were tra...
Concept:
- In 1918, Spemann demonstrated that enormous changes in cell potency do indeed take place during gastrulation.
- He found that the cells of the early gastrula were uncommitted, but that the fates of late gastrula cells were determined.
- Spemann demonstrated this by exchanging tissues between the gastrulae of two species of newts whose embryos were differently pigmented.
- When a region of prospective epidermal cells from an early gastrula was transplanted into an area in another early gastrula where the neural tissue normally formed, the transplanted cells gave rise to neural tissue.
- When prospective neural tissue from early gastrulae was transplanted to the region fated to become belly skin, the neural tissue became epidermal.
- Thus, these early new gastrula cells were not yet committed to a specific fate.
- Such cells are said to exhibit conditional (i.e., regulative or dependent) development because their ultimate fates depend on their location in the embryo.
- However, when the same interspecies transplantation experiments were performed on late gastrulae, Spemann obtained completely different results.
- Rather than differentiating in accordance with their new location, the transplanted cells exhibited autonomous (or independent, or mosaic) development.
- Their prospective fate was determined, and the cells developed independently of their new embryonic location.
- Specifically, prospective neural cells now developed into brain tissue even when placed in the region of prospective epidermis, and prospective epidermis formed skin even in the region of the prospective neural tube.
- Within the time separating early and late gastrulation, the potencies of these groups of cells had become restricted to their eventual paths of differentiation.
Explanation:
Fig 1:
Determination of ectoderm during new gastrulation
- Presumptive neural ectoderm from one newt embryo is transplanted into a region in another embryo that normally becomes epidermis.
(A) When the tissues are transferred between early gastrulas, the presumptive neural tissue develops into epidermis, and only one neural plate is seen.
(B) When the same experiment is performed using late-gastrula tissues, the presumptive neural cells form neural tissue, thereby causing two neural plates to form on the host.
Statement P: The early gastrula show conditional development whereas the late gastrula shows autonomous development.
- Consider the explanation above thus this option is not true, asearly new gastrula cells were not yet committed to a specific fate, whereas that of late gastrula is.
Statement
Q: The early gastrula show autonomous development whereas the late gastrula shows conditional development.- Consider the explanation above thus this option is not true
Statement
R: The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined.- Consider the explanation above thus this option is true, as when a region of prospective epidermal cells from an early gastrula was transplanted into an area in another early gastrula where the neural tissue normally formed, the transplanted cells gave rise to neural tissue.
Statement
S: The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified.- Consider the explanation above thus this option is not true
|
Explore Courses for Software Development exam
|
|
Similar Software Development Doubts
Top Courses for Software DevelopmentView all
When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer?
Question Description
When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer?.
When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer?.
Solutions for When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Software Development.
Download more important topics, notes, lectures and mock test series for Software Development Exam by signing up for free.
Here you can find the meaning of When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When the prospective neurons from an early gastrula of a frog were transplanted into the prospective epidermis region, the donor cells differentiated into epidermis. However, when a similar experiment was done with the late gastrula of frog, the prospective neurons developed into neurons only. These observations could possibly be explained by the following phenomena. P. The early gastrula show conditional development whereas the late gastrula shows autonomous development. Q. The early gastrula show autonomous development whereas the late gastrula shows conditional development. R. The prospective neurons from the early gastrula are only specified whereas those from the late gastrula are determined. S. The prospective neurons from the early gastrula are determined whereas those from the late gastrula are specified. Which of the conclusions drawn above are correct?a)P and Qb)P and Rc)P and Sd)Q and RCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Software Development tests.
|
|
Explore Courses for Software Development exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup