In Huntington’s disease, the unaffected persons are homozygous for normal allele $h$. The following is erroneous because
it shows both male and female affected by Huntingtons disease
either person $6$ or $7$ should have the disease, if individual $11$ shows the disease.
at least one of the $2$ children $(8,\,9)$ should have the disease
all of these
Given is : $X$ is the chromosome with gene for haemophilia and $X$ is the chromosome with normal gene. Which of the following individuals will act as carrier for haemophilia
In which of the following colourblindness is inherited
If both parents are carriers for thalassemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?
One of the following is not true to haemophilia
A boy is colour blind, in his two sisters one is colour blind and one is carrier $(normal)$. Then who is colour blind in his family