Gap Fill


  • Choose the correct word from the drop-down menus below.
  • Click the button at the bottom to check your answers.
  • Press the "refresh" button on your browser to play again.

   ago      creature      dash      genetic      genome      information      map      more      most      others      secrets      separate      species      teeth      time      two      unusual      vertically      word      young  
For the first , scientists have unlocked the to one of the world's recognizable and unique, but least understood fish – the seahorse. Researchers have worked out the code of the Southeast Asian tiger tail seahorse. They now have the genetic of all of its DNA. This means scientists can find out a lot about this sea than before. They can now start to figure out why seahorses are so different to other fish. Unlike other fish, seahorses have no . Another difference is the male brooding of their - male seahorses carry babies and give birth to them instead of females. In addition, seahorses do not swim horizontally like other fish; they swim (up and down).

Scientists from Germany’s University of Konstanz and from China and Singapore helped to sequence the genome of the tiger tail seahorse. A is a map of all the genes and genetic in a cell or organism. Seahorses started to change from other fish about 100 million years . They began to take on their shape, which resembles a horse. There is a total of 54 of seahorse. Its scientific name is Hippocampus. The word 'Hippocampus' comes from the Ancient Greek word hippos meaning 'horse' and kampos meaning 'sea monster'. The 'seahorse' can also be written as two words (sea horse), or hyphenated with a between the words (sea-horse).

Try the sentence jumble.

Back to the seahorses lesson.

Share this lesson

More Free Sites by Sean Banville

Online Activities