#8 What is on your body (20 times) that makes you unique like a snowflake? Fingerprints

#7 Did I buy tickets for the Teacher Variety Show yet?

For lab next week…..  White bread  Strawberry Jam  Orange or Apricot Jam  Strawberry or Vanilla Sugar Wafers  Twizzlers (Pull & Peel)

Fingerprint Patterns How do we identify?

Fingerprints –3 essential facts 1.Formed during fetal development and remain unchanged 2.Fingerprints are unique 3.Can be classified systematically because of pattern of friction ridges which are also present on fingers, palms, and toes

Fingerprints Three basic patterns –Arches, Loops, and Whorls Three basic patterns can be subdivided into eight types: –Arches Plain, Tented –Loops Ulnar, Radial –Whorls Plain Whorl, Central pocket loop, Double loop, Accidental

Fingerprint classifications Loop Whorl Arch

Loop Loops have one Delta.

Whorl X Whorls have two Deltas

Arch X Arches do NOT have any Deltas

Plain Arch

Tented Arch

Tented arch

Radial Loop of left hand showing in red the loop pattern

Radial Loop

Ulnar loop of the left hand

Central Pocket Whorl Plain Whorl

Central Pocket Whorl

Plain Whorl

In a double loop whorl there must be separate inner loops as shown in the blue and red lines

Double Loop

Accidental Whorl

Are you really THAT unique? LoopsWhorl Plain Arch Tented Arch Double Loop