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प्रश्न
Choose the correct answer:
Centromere is related to _______________
पर्याय
movement of chromosomes
DNA replication
all of these
spindle formation
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उत्तर
Centromere is related to movement of chromosomes
APPEARS IN
संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
The term “chromosomes” literally means ______.
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Write a sentence of the following:
Sheath
Write a sentence of the following:
Centromere
Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?
Choose the correct answer:
Chromosomes are thin and thread like at __________
What is the importance of meiosis in creating variations?
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
(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 :
The spindle fibers are made of _______.
Write the functional activity of the following structure:
Spindle fibers
Name the following:
Cells having a single set of chromosomes.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Define euploidy.
Describe the structure of sex chromosomes with the help of labelled diagram.
Which of the following type of chromosomes has only one telomere?
Small swellings on the surface of the chromosome are called______.
Define Aneuploidy.
