Some individuals with blood group -$A$ may inherit the genes for blonde hair, while other individuals with blood group -$A$ may the gene for brown hair. This can be best explained by the principle of

Who was the scientist to introduce $ABO$ blood groups

The first plant in which chromosomal basis of sex determination was discovered is

Improvement of genetic characters and present day generation on the basis of best nutrition and training is called

The chromosome shown in the diagram below is broken at the points which are indicated by the arrows and the genes between these points became inverted

The resulting order of the genes will be