Advertisements
Advertisements
प्रश्न
What is the importance of meiosis?
Advertisements
उत्तर
he meiosis is important to maintain the constant number of chromosomes in a species. It also brings about variations which result in the evolution or origin of new species
APPEARS IN
संबंधित प्रश्न
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
The Chromatin material is formed forms of ______.
What is the difference between chromatin fibre and chromosome?
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ____________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
Why gametes have a haploid number of chromosomes?
What is the importance of meiosis in creating variations?
(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.
Give Technical Term:
Transmission of characters through generations.
Write the functional activity of the following structure:
Chromosomes
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. |
Nullisomy is represented by ______.
The number of chromosomes found in human beings is ______.
Which of the following is TRUE with respect to the genes which inherit together during crossing over?
Small swellings on the surface of the chromosome are called______.
The two non-sister chromatids of a paired chromosome are attached to each other at ______ during the process of crossing over.
Given below is a set of four term. Choose the odd one and write the category of the remaining term:
