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प्रश्न
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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 .
Correct the following statement if there is any mistake:
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
Fill in the blank
The _______ (s) are surrounded by radiating rays called aster
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Chromosomes are mainly made up of ______.
Choose the correct answer:
Centromere is related to _______________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ________________
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Choose the correct answer:
Chromosomes are thin and thread like at __________
What is the importance of meiosis?
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Give Technical Terms
The stage when sister chromosomes separate from their paired condition.
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
State the Location: Chromosomes
State the Location: Polytene chromosome
Write the functional activity of the following structure:
Chromosome
Explain the structure of chromosomes with labelled diagram.
Read the following statements and select the correct option.
Statement I: The densely packed transcriptionally active, light staining region of chromatin is known as 'Heterochromatin'.
Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
Distinguish between the following pair:
Karyotype and Karyokinesis
