Question

(a) Why is it that the father never passes on the gene for haemophilia to his sons? Explain.
(b) State the functions of the following in a prokaryote:
(i) tRNA (ii) rRNA

Answer 1

a) A father never passes on the gene for haemophilia to his son because haemophilia is the genetic disorder carried by recessive genes (X chromosome). Son always carries y linked genes from his father which do not carry gene for haemophilia and X chromosome from mother.

b) tRNA: It is an adaptor molecule which carries amino acids for protein synthesis.

rRNA: It acts like a catalyst during protein synthesis.