The 8-cent Martha Washington stamp, issued in 1902, was the first stamp issue featuring an American woman.
The islands of Isla de Lobos and Lobos Island (Rio Negro)
<span><span>Which football club's ground is Swindon Town </span>
</span>
<span>The Muslim troops were under
the leadership of Salah ad-Din (Saladin) an Ayyubid sultan. They had murdered
and enslaved many Crusaders which made the Muslims a great military power in
Jersualem, the Holy Land. They had also captured other cities which sparked
what was then known as the ‘Third Crusade’.</span>
Answer:
True
Explanation:
During the late 1950s and early 1960s, Werner Arber and several others extended the work of an earlier Nobel laureate, Salvador Luria, who observed that bacteriophages (viruses that infect bacteria) not only induce hereditary mutations in their bacterial hosts but at the same time undergo hereditary mutations themselves. Werner Arber’s research was concentrated on the action of protective enzymes present in the bacteria, which modify the DNA of the infecting virus e.g., the restriction enzyme, so-called for its ability to restrict the growth of the bacteriophage by cutting the molecule of its DNA to pieces.
