Pick out the correct statement. (i) Karyotyping helps in gender identification (ii) Holandric genes are located on X- chromosome (iii) Trisomy- 21 is an allosomal abnormality (iii) Cooley's anaemia is an autosomal recessive disorder
What is variation? What are its types?
List any three applications of karyotype.
During karyotyping, at which state will colchicine arrest cell division.
