Select the incorrect statement from the following

(1) linkage is an exception to the principle of independent assortment in heredity

(2) galactosemia is an inborn error of metabolism

(3) small population size results in random genetic drift in a population

(4) baldness is a sex limited trait

Which pair is incorrect?

(1) Haemophilia - X linked recessive

(2) baldness - X- linked dominance

(3) colour blindness- X linked recessive

(4) antler in deer - sex limited.