Advertisements
Advertisements
प्रश्न
Name the following:
The number of chromosomes present in a nerve cell of a human being.
Advertisements
उत्तर
46 (23 pairs)
APPEARS IN
संबंधित प्रश्न
State the difference between:
Chromosome and chromatid:
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
The term 'chromosome' was coined by ___________
Choose the correct answer:
Chromosome number of man is _____________
Give Reasons for the following
The meiosis is called reductional division
Identify the stages of meiosven below and label them.
(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.
Name the following:
The part of the cell associated with heredity.
Write the functional activity of the following structure:
Spindle fibers
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Define euploidy.
In higher unisexual animals, one pair of chromosomes is not identical in two sexes. It is called as ______.
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
Small swellings on the surface of the chromosome are called______.
The chromosomes are duplicated in ______.
After a mitotic cell division, a human female cell will have ______.
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:
