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प्रश्न
Answer the following question.
Compare in any three ways the chromosomal theory of inheritance as proposed by Sutton and Bovery with that of experimental results on pea plant presented by Mendel.
उत्तर
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits. He recognized the mathematical patterns of inheritance from one generation to the next.
Mendel did not investigate how characteristics are sorted and combined on a cellular level. Sutton and Boveri, working independently, suggested that chromosomes could be shown to bear the materials of heredity.
They noted that the behaviour of chromosomes was parallel to the behaviour of the gene and used chromosomes movement to explain Mendel's laws.
Sutton and Boveri argued that the pairing and separation of pairs of chromosomes would lead to the segregation of a pair of factors they carry. Sutton united the knowledge of chromosomal segregation with Mendelian principle and called it " chromosomal theory of inheritance".
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संबंधित प्रश्न
Distinguish between monohybrid and dihybrid cross.
Define the following:
Dominant
Choose the correct answer:
Mendel conducted his hybridization experiments on _______
State whether the following statement is true or false:
The dominant character masks the recessive character.
Law of independent assortment can be explained with the help of ______.
Mendel’s law of independent assortment does not hold true for the genes that are located closely on ______.
The material used for conducting experiments on genetic traits by Mendel was ______.
Read the following and answer from given below:
Prashant wanted to find the genotype of a pea plant bearing purple coloured flowers in his kitchen garden. For this, he crossed purple-flowered plants with white-flowered plants. As a result, all plants which were produced had purple flowers only. Upon selfing these plants, 75 purple flower plants and 25 white flowers plants were produced. Now, he can determine the genotype of a purple-flowered plant by crossing it with a white-flowered plant.
In white-flowered plants, the allele is expressed in ______
Select the group which shares maximum number of common characters
How many pairs of contrasting characters in pea bad were chosen by Mendel?
