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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
If centromere is situated in the middle of the chromosome, it is called ________.
(a) Metacentric
(b) Acrocentric
(c) Submetacentric
(d) Telocentric
Explain the types of chromosomes on the basis of position of centromere.
An allohexaploidy contains
If the haploid number in a cell is 18. The double monosomic and trisomic number will be
Which of the following is a primary constriction?
Chromosomal theory of inheritance was put forth by ______
A gene pair hides the effect of another. The phenomenon is ______.
Extra nuclear chromosomes occur in ______.
What are minisatellites?
Which of the following phase follows S and G2 phases of interphase?
