Describe the shape of the planarian. was there a difference between the two ends of the planarian?

Planarian is a member of the family Planariidae and is one of the flatworms present on the planet.

These planarian species have bilateral symmetry with a soft, leaf-shaped and ciliated body of 3 to 15 mm length and can grow up to 30 cm.

Its head is spade-shaped with two eyes which help him in running away from light and a brain made of ganglion cells. The mouth is present on the ventral (lower) side of the body towards the tail which is pointed.

Head and tail region of planaria show the difference as the head part contains eye-spots and is broad whereas tail part contains mouth near to it and is pointed.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'