Advertisements
Advertisements
प्रश्न
What is the importance of meiosis?
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
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
Choose the correct answer:
Chromosomes appear at equator in ____________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Mention the contribution of the scientist given below in the study of chromosome:
Balbiani
(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.
Explain the Term Zygotene
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
Multiple Choice Question:
The period between two successive mitotic divisions is
State the Location: Chromosomes
Name the following:
Pair of genes responsible for a particular characteristic.
Multiple Choice Question
Chromosomal aberrations are caused by:
The centromere is found at the centre of the ______ chromosome.
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
Explain the structure of a chromosome.
The two non-sister chromatids of a paired chromosome are attached to each other at ______ during the process of crossing over.
In the human male, a sperm contains autosomes and ______.
Distinguish between the following pair:
Karyotype and Karyokinesis
