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प्रश्न
उत्तर
In man, there is a pair of sex chromosomes. In males, it is X and Y while in female, the sex chromosomes are X and X which are identical to each other.
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संबंधित प्रश्न
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Answer the following question in your own words.
What is meant by ‘chromosome’?
Chromosomes are mainly made up of ______.
Choose the correct answer:
Chromosomes number is halved in ____________
Mention the contribution of the scientist given below in the study of chromosome:
Waldeyer
Mention the contribution of the scientist given below in the study of chromosome:
Sutton and Boveri
Write a sentence of the following:
Centromere
Choose the correct answer:
Sex of an individual is determined by ____________
Give Reasons for the following
Chromosomes are the carriers of heredity.
Differentiate between
Gametic meiosis and Zygotic meiosis.
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.
Give Technical Terms
The stage at which the formation of chiasmata occurs.
Write the functional activity of the following structure:
Chromosome
Define euploidy.
Describe the structure of sex chromosomes with the help of labelled diagram.
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 chromosomes are duplicated in ______.
Rewrite the correct form of the statement by changing the first or last word only:
Duplicated chromosomes remain attached at a point termed as centrosome.
