A man homozygous for brown colour marries a lady heterozygous for brown colour is dominant. What will be the fate of their children

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character.

Study the pedigree chart given below. What does it show?

Mr. Stevan is suffering from haemophilia and cystic fibrosis. His father is hetrozygous for cystic fibrosis. The probability of Stevan's sperm having recessive $X-$linked as well as autosomal allele is

The pedigree chart given below shows a particular trait which is absent in parents but present in the next generation irrespective of sexes. Draw your conclusion on the basis of the pedigree.

Given below is a pedigree chart showing the inheritance of a certain sex- linked trait in humans.

The trait traced in the above pedigree chart is