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प्रश्न
Short Answer Question.
Explain the chromosomal theory of inheritance.
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उत्तर
The chromosomal theory of inheritance was proposed by Sutton and Boveri.
Following are the postulates of chromosomal theory of inheritance:
- Chromosomes are found in pairs in somatic or diploid cells.
- During gamete formation, homologous chromosomes pair, segregate and assort independently at meiosis. Due to this, each gamete contains only one chromosome of a pair.
- Hereditary characters are carried by chromosomes which are present in the nucleus of these gametes.
- Gametes (sperm and egg) contain all the hereditary characters. They form the link between parents and offsprings.
- The union of sperm and egg during fertilization restores the diploid number of chromosomes.
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संबंधित प्रश्न
State the difference between meiocyte and gamete with respect to chromosome number.
Who had proposed the chromosomal theory of inheritance?
Distinguish between X andY chromosomes. (Mention any 'two' points.)
Define the Homologous chromosomes
If the haploid number in a cell is 18. The double monosomic and trisomic number will be
Mention the name of man-made cereal. How it is formed?
Telocentric chromosome differs from acrocentric chromosome in that ____________.
A gene pair hides the effect of another. The phenomenon is ______.
Which of the following statements indicates parallelism in genes and chromosomes?
- They occur in pairs.
- They segregate during gamete formation.
- They show linkage.
- Independent pairs segregate independently.
During mitosis, chromosomes distribution to the daughter cell is ______.
