Which among the following was not proposed by Sutton and Boveri?
Which among the following was not proposed by Sutton and Boveri?
The correct option is B Characters are controlled by factors
Mendel after conducting hybridisation experiments on pea plants postulated that characters are controlled by discrete units called factors which occur in pairs.
But Mendel was unaware of what factors (genes) are made of and where they are exactly located in the organism.
Sutton and Boveri stated that factors (genes) are present at specific locations on chromosomes.
They noticed that the behaviour of chromosomes is parallel to the behaviour of genes and tried to explain the laws of Mendel with the help of behaviour of chromosomes during meiosis.
During meiosis, there is pairing of homologous chromosomes and exchange of genetic material. This is followed by the separation of the pairs of chromosomes such that each gamete receives only one chromosome out of the pair. The paired condition of chromosomes is restored after fertilisation.
Sutton and Boveri tried to explain Mendel's law of segregation. According to the law, the factors controlling a character separate during gamete formation such that each gamete has only one factor out of the pair. Sutton and Boveri stated that as factors (genes) are carried by chromosomes, the separation of chromosomes during gamete formation will also separate the factors they carry.
Also they noticed that members of different chromosome pairs are sorted into gametes independently of one another and this is very much similar to the alleles of different genes as stated in the law of independent assortment by Mendel.
Mendel after conducting hybridisation experiments on pea plants postulated that characters are controlled by discrete units called factors which occur in pairs.
But Mendel was unaware of what factors (genes) are made of and where they are exactly located in the organism.
Sutton and Boveri stated that factors (genes) are present at specific locations on chromosomes.
They noticed that the behaviour of chromosomes is parallel to the behaviour of genes and tried to explain the laws of Mendel with the help of behaviour of chromosomes during meiosis.
During meiosis, there is pairing of homologous chromosomes and exchange of genetic material. This is followed by the separation of the pairs of chromosomes such that each gamete receives only one chromosome out of the pair. The paired condition of chromosomes is restored after fertilisation.
Sutton and Boveri tried to explain Mendel's law of segregation. According to the law, the factors controlling a character separate during gamete formation such that each gamete has only one factor out of the pair. Sutton and Boveri stated that as factors (genes) are carried by chromosomes, the separation of chromosomes during gamete formation will also separate the factors they carry.
Also they noticed that members of different chromosome pairs are sorted into gametes independently of one another and this is very much similar to the alleles of different genes as stated in the law of independent assortment by Mendel.
