1 A match on the X can eliminate many ancestors from an autosomal match BUT a small match on the X can be from a different line so this is not guaranteed.  There seems to be less recombination on the X. I have heard of cases where a child got an unrecombined X from their mother. In my own family, the number of recombined segments is quite small. So it seems to me that on the female to female line the X behaves like a sluggish autosome and is not quite as actively recombined as the other chromosomes.
ANSWER: Malaria can be prevented in a number of ways, the main three of which are bite reduction, prophylaxis and vector control.Bite reduction just means steering clear of mosquitoes, and specifically those that transmit malaria.NSWER: Malaria can be prevented in a number of ways, the main three of which are bite reduction, prophylaxis and vector control.
The control of the communicable diseases should focus on controlling the factors of the spread of communicable diseases to break the chain of infection. Table 1-2 Control measures for the transmission of communicable diseases Factors of Control measures