Gene expression within the body is controlled by the cells, which determine when a specific gene should or should not be express
ed. Influenza (the flu) is caused by a virus that attacks the respiratory system. Which type of gene is likely to be widely expressed in the body of someone who contracts the influenza virus?
Feral cats threaten<span> the survival of over </span>100<span> native </span>species in Australia<span>. They have caused the extinction of some ground-dwelling birds and small to medium-sized mammals. </span>
