Generation of non-parental gene combinations is termed as

Drosophila flies with one half of the body male and other half female is referred to as

The barr body is observed in

Chimera is produced due to

A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children ($2$ daughters and $5$ sons). Three of the sons suffer from the given disease but none of the daughters are affected which of the following mode of inheritance do you suggest for this disease