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प्रश्न
Name the following:
Pairs of chromosomes, present in human egg cells.
उत्तर
23
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संबंधित प्रश्न
Name the sex chromosomes in human males and females
Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong
Centrosome.Cell wall, Cell membrane, Large vacuoles
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
Fill in the blank
The _______ (s) are surrounded by radiating rays called aster
State the difference between:
Chromosome and chromatid:
Chromosomes are mainly made up of ______.
Choose the correct answer:
A 'V' shaped chromosomes has to _____________
(i) Draw a neat labeled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosome.
(ii) How many daughter cells are formed at the end of mitosis and at the end of meiosis?
(iii) With reference to cell division explain the following terms:
(Chromatid, Centromere, Haploid).
(iv) Name the type of cell division that occurs during:
1. Growth of shoot 2. Formation of pollen grains.
3. Repair of worn out tissues.
Complete the following sentence with appropriate word :
Chromosomes are _________ material.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| Genetics | Chromosomes are similar in size and shape. |
| Autosomes | The alternative forms of a gene. |
| Recessive gene | Study of laws of inheritance of characters |
| Allele | A gene that can express only when in a similar pair. |
| Homologous chromosomes | Chromosomes are other than the pair of sex chromosomes. |
Compare X chromosome and Y chromosome.
The region of the chromosome where the spindle fibres get attached during cell division ______
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
______ is a sudden permanent heritable change that can occur in the gene, in the chromosome or chromosome number.
Which of the following is TRUE with respect to the genes which inherit together during crossing over?
A male gorilla has 48 chromosomes in each of its body cells. How many chromosomes will each of the sperms have?
The female gamete/egg cell of a human cell will have ______.
Define the following term:
Chromatid
Rewrite the correct form of the statement by changing the first or last word only:
Duplicated chromosomes remain attached at a point termed as centrosome.
