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प्रश्न
Synthesis phase in the cell cycle is called so, because of the synthesis of more:
A. RNA
B. RNA and proteins
C. DNA
D. Glucose
उत्तर
DNA
(DNA synthesis occurs during the S-phase of the cell cycle.)
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संबंधित प्रश्न
Name the sex chromosomes in human males and females
Mention whether the following statement is (T) Or (F). Give reason in support of your answer.
The unfertilized human egg has half the number of chromosomes of the body cells.
Choose the correct answer:
During mitosis which of the following disintegrate ___________
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?
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in ______.
Give Reasons for the following
The meiosis is called reductional division
(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 Chromosomes
Name the following:
Microtubules form the bipolar spindle in which stage.
Duplicated chromosomes are joined at a point termed ______.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Write the functional activity of the following structure:
Chromosomes
Compare X chromosome and Y chromosome.
The centromere is found at the centre of the ______ chromosome.
What' does 'P' and 'Q' represent in the following diagram of X and Y chromosomes? Select the correct option representing, its appropriate description.
Which of the following is TRUE with respect to the genes which inherit together during crossing over?
