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प्रश्न
During oogenesis, each diploid cell produces ______.
पर्याय
four functional eggs
two functional eggs and two polar bodies
one functional egg and three polar bodies
four functional polar bodies
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उत्तर
During oogenesis, each diploid cell produces one functional egg and three polar bodies.
Explanation:
- During oogenesis, a diploid primary oocyte undergoes meiosis I to produce one large secondary oocyte and a smaller polar body.
- The secondary oocyte undergoes meiosis II after fertilization to form one functional ovum and a second polar body.
- The first polar body may also divide to form two smaller polar bodies.
- Therefore, from one diploid cell, oogenesis results in one functional egg (ovum) and three polar bodies which are non-functional and eventually degenerate.
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संबंधित प्रश्न
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Name the hormones involved in regulation of spermatogenesis.
Sex organs produce gametes which are diploid.
The male sex hormone testosterone is secreted from ____________.
During spermatogenesis, spermatogonium grows in size to become ______.
Which of the following enter the maturation phase of oogenesis?
How many autosomes does a human primary spermatocyte have?
Cells of corona radiata remain grouped together by ______.
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
