Hemophilia is a sex-linked recessive disease in which blood…

Hemophilia is a sex-linked recessive disease in which blood does not clot properly. Indicate if these statements about the gene for blood clotting are TRUE (T) or FALSE (F)             1. Boys have only one copy of this gene            2. Females inherit copies of this gene from both parents            3. Boys inherit a copy of this gene from their fathers            4. Girls cannot have hemophilia

The expression of ABO blood types depends on the activity of…

The expression of ABO blood types depends on the activity of a second gene H. Explain how an H gene allele can affect the expression of the ABO blood grouping system known as the Bombay phenotype? What do we call this type of interaction where one gene can affect the expression of a second gene? 

According to a new study, the number of cases of whooping co…

According to a new study, the number of cases of whooping cough has steadily increased since 2008 peaking in 2010. The rate of voluntary vaccine withdrawal (not receiving a vaccine shot) for whooping cough increased from 2007 to 2010.  Whooping cough vaccine has a known effect on the number of whooping cough infections, and a large majority of individuals were not vaccinated. Which would best explain the relationship between whooping cough infections and vaccine withdrawal?