Haemophilia most likely originated as a result of
A. The separation of two homologous chromosomes
B. A non disjunction of chromosome number 21
C. The crossing over to two sex chromosomes
D. A gene mutation in the X- chromosome
Answer:A
Haemophilia most likely originated as a result of
A. The separation of two homologous chromosomes B. A non disjunction of chromosome number 21 C. The crossing over to two sex chromosomes D. A gene mutation in the X- chromosome