All the sons are haemophilic and daughter are normal of a haemophilic father and normal mother. This character is

Heterozygous tall and violet flowered pea plants were selfed and total $512$ seeds are collected. What will be total number of seeds for both heterozygous traits?

Epistasis implies

Assertion : Persons suffering from haemophilia fail to produce blood clotting factor $VIII$.

Reason : Prothrombin producing platelets in such persons are found in very low concentration.

Animal which remains male initially, then changes to female $(Tapeworm\, proglottides)$ is called