Barr bodies are
Chromatin negative
Not influenced by stains
Chromatin positive
Poorly staining
Mongolism syndrome is caused by
In garden pea, starch is synthesised effectively in
Mark the correct option (w.r.t. monosomy)
Lesch Nyhan disease is an $X-$linked recessive disorder that causes neurological damage in human beings. $A$ survey of $500$ mates from a caucasion population revealed that $20$ were effected with this disorder. What is the frequency of the normal allele in this population?
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