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Name KEY Block _____ DNA Quiz Review Matching: Match the scientists with what they discovered B 1) Watson and Crick A) First person to state that the number of A=T and G=C in a DNA molecule C 2) Rosalind Franklin B) Responsible for constructing the first model of DNA A 3) Erwin Chargaff C) Used X-rays to capture first images of DNA. 4) The true shape of DNA is called a double helix. 5) Place the following terms from largest to smallest? { genes , DNA , nucleus , chromosomes , cell } genes chromosomes DNA nucleus cell B 6) The picture to the right makes up a: a) nitrogen base b) nucleotide c) ribosome d) full DNA molecule 7) “X” represents a gene which is a segment of DNA that codes for a trait X Write the complimentary strand of DNA 8) Strand 1: A T C G T A G G C 9) Strand 1: T T G G C G T A Strand 2: T A G C A T C C G Strand 2: A A C C G C A T 10) Define Mutagen: A mutagen is anything that can cause a mutation or a change in an organism’s DNA. 11) Give an example of a mutagen? Examples of mutagens include x – rays, UV light, asbestos, chemicals in cigarette smoke. 12) Identify the type of mutation and circle where the mutation took place Original Strand- A A T C T C A T C Original Strand- C C C C T A T C Mutated Strand- A A T T C A T C Mutated Strand- C C G C T A T C Type of Mutation Deletion Type of Mutation Substitution Original Strand- G G T C A T C T A Original Strand- Mutated Strand- G G T C A T C A A Mutated Strand- T T A T C T C C T T T A T C T C T Type of Mutation Substitution Type of Mutation Insertion Original Strand- T T C T A C T G G Original Strand- Mutated Strand- T C T A C T G G Mutated Strand- G A T A C A T C Type of Mutation Deletion 13) Type of Mutation Substitution What was the name of the disorder that produces the mutation shown to the right? The name of the disorder that produces this kind of mutation is sickle–cell anemia. 14) What are some of the symptoms with this mutation? These misshapen red blood cells cannot hold enough oxygen and increase the chance of blood clots. 15) Are there any other questions you have regarding DNA? Nope, I know everything! C A T A G A T C