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प्रश्न
The karyotype (set of chromosomes) shown below is taken from a dividing cell in a certain individual.
(i) Is the individual male or female? Explain your answer.
(ii) How would you expect
(a) a female cell and
(b) sperm cell to differ in chromosome composition?
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उत्तर
(i) Male, because there is a Y-chromosome and an X-chromosome.
(ii)
(a) A female would have two X-chromosomes and no Y-chromosome.
(b) A sperm cell would have half the number of chromosomes. 23 instead of 46. There would be only one sex-chromosome which could be either Y or X.
संबंधित प्रश्न
Given below is a diagram representing a stage during mitotic cell division in an animal cell Examine it carefully and answer the questions which follow.
- Identify the stage. Give one reason in support of your answer.
- Name the cell organelle that forms the ‘aster’.
- Name the parts labelled 1, 2 and 3.
- Name the stage that follows the one shown above; how is that stage identified?
- Mention two differences between mitosis and meiosis with regards to:
- The number of daughter cells produced.
- The chromosome number in the daughter cells.
All chromosomes are arranged parallel to equatorial plane of cell in ______ phase of mitosis.
With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.
Define the following:
Karyokinesis
Fill in the blank:
______ takes place in body cells resulting in growth and development.
Choose the correct answer:
Nuclear membrane reappears in ____________
In which one of the following options the two stages of mitosis have been given in correct sequence?
Identify the stages of mitosis given below and label the figures.
Explain the Term Cell Diakinesis
Name the following:
The kind of division normally seen at the tip of the root and shoot system.
Name the Following
Nuclear envelope and nucleoli reappear in which stage.
Give Technical Terms
The stage in mitosis when the nucleolus starts disappearing.
Multiple Choice Question:
The nuclear membrane and nucleolus become indistinguishable during
Give the sequence of the events occurring during the prophase of mitosis.
During Mitosis what is the position of chromatids in metaphase?
During Mitosis what is the position of chromatids in the anaphase?
Match List - I with List - II.
| List - I | List - II |
| A. Centromere | I. Mitochondrion |
| B. Cilium | II. Cell division |
| C. Cristae | III. Сell movement |
| D. Cell membrane | IV. Phospholipid Bilayer |
Choose the correct answer from the options given below:
