● In 1900, three Scientists (`color{Violet}"de Vries"`, `color{Violet}"Correns"` and `color{Violet}"von Tschermak"`) independently rediscovered Mendel’s results on the inheritance of characters.
● Also, by this time due to `color{Violet}"advancements in microscopy"` that were taking place, scientists were able to carefully observe `color{Violet}"cell division"`.
● This led to the `color{Violet}"discovery of structures"` in the nucleus that appeared to double and divide just before each cell division.
● These were called `color{Violet}"chromosomes"` (colored bodies, as they were visualised by `color{Violet}"staining"`).
● By `color{Violet}"1902"`, the chromosome movement during meiosis had been worked out.
● `color{Violet}"Walter Sutton"` and `color{Violet}"Theodore Boveri"` noted that the behaviour of chromosomes was `color{Violet}"parallel"` to the behaviour of genes and used `color{Violet}"chromosome movement"` to explain Mendel’s laws .
● The important things to remember are that `color{Violet}"chromosomes"` as well as genes occur in pairs.
● The two alleles of a gene pair are located on `color{Violet}"homologous sites"` on homologous chromosomes.
● During `color{Violet}"Anaphase of meiosis I"`, the two chromosome pairs can align at the `color{Violet}"metaphase plate"` independently of each other.
● To understand this, compare the chromosomes of four different colour in the left and right columns.
● In the left column (`color{Violet}"Possibility I"`) orange and green is segregating together.
● But in the right hand column (`color{Violet}"Possibility II"`) the orange chromosome is segregating with the red chromosomes.
● `color{Violet}"Sutton and Boveri"` argued that the pairing and separation of a `color{Violet}"pair of chromosomes"` would lead to the segregation of a `color{Violet}"pair of factors"` they carried.
● Sutton united the knowledge of `color{Violet}"chromosomal segregation"` with Mendelian principles and called it the `color{Violet}"Chromosomal theory of inheritance"`.
● In 1900, three Scientists (`color{Violet}"de Vries"`, `color{Violet}"Correns"` and `color{Violet}"von Tschermak"`) independently rediscovered Mendel’s results on the inheritance of characters.
● Also, by this time due to `color{Violet}"advancements in microscopy"` that were taking place, scientists were able to carefully observe `color{Violet}"cell division"`.
● This led to the `color{Violet}"discovery of structures"` in the nucleus that appeared to double and divide just before each cell division.
● These were called `color{Violet}"chromosomes"` (colored bodies, as they were visualised by `color{Violet}"staining"`).
● By `color{Violet}"1902"`, the chromosome movement during meiosis had been worked out.
● `color{Violet}"Walter Sutton"` and `color{Violet}"Theodore Boveri"` noted that the behaviour of chromosomes was `color{Violet}"parallel"` to the behaviour of genes and used `color{Violet}"chromosome movement"` to explain Mendel’s laws .
● The important things to remember are that `color{Violet}"chromosomes"` as well as genes occur in pairs.
● The two alleles of a gene pair are located on `color{Violet}"homologous sites"` on homologous chromosomes.
● During `color{Violet}"Anaphase of meiosis I"`, the two chromosome pairs can align at the `color{Violet}"metaphase plate"` independently of each other.
● To understand this, compare the chromosomes of four different colour in the left and right columns.
● In the left column (`color{Violet}"Possibility I"`) orange and green is segregating together.
● But in the right hand column (`color{Violet}"Possibility II"`) the orange chromosome is segregating with the red chromosomes.
● `color{Violet}"Sutton and Boveri"` argued that the pairing and separation of a `color{Violet}"pair of chromosomes"` would lead to the segregation of a `color{Violet}"pair of factors"` they carried.
● Sutton united the knowledge of `color{Violet}"chromosomal segregation"` with Mendelian principles and called it the `color{Violet}"Chromosomal theory of inheritance"`.