A colourblind daughter is born when
Father is colourblind, mother is normal
Mother is colourblind, father is normal
Mother is carrier, father is normal
Mother is carrier, father is colourblind
It is said, that the harmful alleles get eliminated from population over a period of time, yet sickle cell anaemia is persisting in human population. Why ?
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.
Which one of the following symbols represents mating between relatives in human pedigree analysis?
Person whose father is colourblind marries a lady whose mother is daughter of a colourblind man. Their children will be
If a colour blind woman marries a normal visioned man, their sons will be