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प्रश्न
In a karyotype analysis, X and Y chromosomes represent sex chromosomes.
Name the scientist who discovered the X chromosome.
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उत्तर
The German biologist Hermann Henking discovered the X chromosome.
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संबंधित प्रश्न
If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?
- 9
- 18
- 27
- 36
Sketch and label the structure of chromosome.
State the difference between meiocyte and gamete with respect to chromosome number.
Classify the chromosomes on the basis of position of centromere.
Give an account of artificial chromosomes in the transfer of genetic material.
From the following identify the statements that are CORRECT with respect to homologous and non-homologous region of X and Y chromosomes.
i. Non-homologous region of X chromosome is longer and contains more genes than that of non-homologous region of Y chromosome.
ii. X-linked genes are present on nonhomologous region of X-chromosome.
iii. Y-linked genes are present on homologous region of Y-chromosome.
iv. Crossing over occurs only between homologous regions of X and Y chromosomes.
In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are ______.
During mitosis, chromosomes distribution to the daughter cell is ______.
Which of the following phase follows S and G2 phases of interphase?
According to the Chromosomal Theory of Inheritance, what are the specific positions on chromosomes where genes are located called?
