Show with a cross how hereditary transmission happen incase of colour blindness? What problems a person with thalassemia suffers?

Show with the help of a cross, how colour blindness in inherited.

Sometimes it is observed that both parents are normal. But they have a colour-blind son. Explain how this is possible with the help of a cross.

Write down the law derived from Mendel’s dihybrid cross. Explain with an example how the hereditary transmission of haemophila occurs.

A snapdragon plant homezygous for red flower when crossed with a white flowered plant of the same species produced pink flowers in F_(1) generation. (a) What is the phenotypic expression called ? (b) Work out the cross to show the F_(2) generation when F_(1) was self-pollinated. Give the phenotypic and genotypic ratios of f_(2) generation. (c) How do you compare the f_(2) phenotypic and genotypic ratios with those of Mendelian monohybrid f_(2) ?

A child suffering from Thalassemia is born to a normal couple. But the mother is being blamed by the family for delivering a sick baby. (a) What is Thalassemia ? (b) How would you counsel the family not to blame the mother for delivering a child suffering from this disease ? Explain... (c) List the values your counselling can propagate in the families.