NEET Exam > NEET Questions > At the birth of a female child, the follicles...
Start Learning for Free
At the birth of a female child, the follicles in her ovaries contain:
- a)Primary oocytes that have been arrested at the S phase of the cell cycle
- b)Primary oocytes that have been arrested at the Prophase I of Meiosis I
- c)Secondary oocytes that have been arrested at the Prophase I of Meiosis I
- d)Secondary oocytes that have been arrested at the Metaphase II of Meiosis II
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
At the birth of a female child, the follicles in her ovaries contain:a...
At birth, the follicles in a female's ovaries contain primary oocytes that are arrested at Prophase I of Meiosis I. These oocytes remain in this arrested state until puberty and further stages of maturation.
Free Test
FREE
| Start Free Test |
Community Answer
At the birth of a female child, the follicles in her ovaries contain:a...
Understanding Oocyte Development
At the birth of a female child, her ovaries contain a specific type of cell known as primary oocytes. These cells are crucial in the process of oogenesis, which is the development of eggs.
Key Characteristics of Primary Oocytes
- Arrested Stage: Primary oocytes are arrested in the Prophase I stage of meiosis. This arrest occurs during fetal development and remains until puberty.
- Meiotic Division: Each primary oocyte is diploid (2n), meaning it contains two sets of chromosomes. During the Prophase I, the primary oocyte prepares for meiosis but does not complete the division.
Significance of Prophase I Arrest
- Ovarian Reserve: At birth, a female's ovaries contain a finite number of primary oocytes, which constitute her ovarian reserve. This reserve will gradually deplete over her reproductive life.
- Hormonal Regulation: The primary oocytes remain dormant until hormonal changes during puberty trigger their maturation. Each menstrual cycle typically leads to the maturation of one primary oocyte into a secondary oocyte.
Meiosis and Oocyte Maturation
- Secondary Oocyte Formation: Upon completion of the first meiotic division, a primary oocyte transforms into a secondary oocyte and a polar body. The secondary oocyte is then arrested in Metaphase II until fertilization occurs.
- Oocyte Release: During ovulation, the secondary oocyte is released from the ovary, and if fertilized, it will complete the second meiotic division.
Conclusion
Thus, at birth, the follicles in a female child’s ovaries contain primary oocytes that have been arrested at Prophase I of Meiosis I, confirming that option 'B' is indeed correct.
At the birth of a female child, her ovaries contain a specific type of cell known as primary oocytes. These cells are crucial in the process of oogenesis, which is the development of eggs.
Key Characteristics of Primary Oocytes
- Arrested Stage: Primary oocytes are arrested in the Prophase I stage of meiosis. This arrest occurs during fetal development and remains until puberty.
- Meiotic Division: Each primary oocyte is diploid (2n), meaning it contains two sets of chromosomes. During the Prophase I, the primary oocyte prepares for meiosis but does not complete the division.
Significance of Prophase I Arrest
- Ovarian Reserve: At birth, a female's ovaries contain a finite number of primary oocytes, which constitute her ovarian reserve. This reserve will gradually deplete over her reproductive life.
- Hormonal Regulation: The primary oocytes remain dormant until hormonal changes during puberty trigger their maturation. Each menstrual cycle typically leads to the maturation of one primary oocyte into a secondary oocyte.
Meiosis and Oocyte Maturation
- Secondary Oocyte Formation: Upon completion of the first meiotic division, a primary oocyte transforms into a secondary oocyte and a polar body. The secondary oocyte is then arrested in Metaphase II until fertilization occurs.
- Oocyte Release: During ovulation, the secondary oocyte is released from the ovary, and if fertilized, it will complete the second meiotic division.
Conclusion
Thus, at birth, the follicles in a female child’s ovaries contain primary oocytes that have been arrested at Prophase I of Meiosis I, confirming that option 'B' is indeed correct.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer?
Question Description
At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer?.
At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer?.
Solutions for At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer?, a detailed solution for At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice At the birth of a female child, the follicles in her ovaries contain:a)Primary oocytes that have been arrested at the S phase of the cell cycleb)Primary oocytes that have been arrested at the Prophase I of Meiosis Ic)Secondary oocytes that have been arrested at the Prophase I of Meiosis Id)Secondary oocytes that have been arrested at the Metaphase II of Meiosis IICorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
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