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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
Describe the structure of sex-chromosomes.
Define the Homologous chromosomes
The A and B genes are 10 cm apart on a chromosome. If an AB/ab heterozygote is test crossed to ab/ab, how many of each progeny class would you expect out of 100 total progeny?
Write the salient features of the Sutton and Boveri concept.
A plant having the genotype AABbCC will produce ______ kinds of gametes.
Extranuclear inheritance occurs in ______.
Which three scientists independently rediscovered Mendel’s work?
Chromosome maps/genetic maps were first prepared by ______.
A couple has two daughters. What is the probability that the third child will also be a female?
During mitosis, chromosomes distribution to the daughter cell is ______.
