Question

dna structure and replication review
on the lines provided, complete the following sentences.

1. the letters dna stand for _________________________
2. the structure of a dna molecule can be described as a _________________________
3. two scientists, _______________________ and _______________________ received a

nobel prize for discovering the structure of a dna molecule. however, they relied heavily on an x-ray
crystallography photography by _________________________ who did not receive a nobel prize.

1. genetics is the study of _________________________
2. _________________________ was a monk who experimented with inheritance patterns using pea

plants and later became known as the father of _________________________
circle the correct term to complete the sentences below.

1. during dna replication, the dna molecule ( separates / combines ) into two strands.
2. at the end of dna replication, ( four / two ) new strands of dna have been produced, giving a total of

( four / two ) strands of dna.

1. new dna is replicated in strands complementary to old dna because production of new dna follows the

rules of ( base pairing / the double helix ) in a ( conservative / semi-conservative ) pattern.
identify the numbered parts of the dna molecule below and write the name on the corresponding lines.
hydrogen bond nucleotide
nitrogenous base sugar-phosphate backbone

1. _________________________
2. _________________________
3. _________________________
4. _________________________

Explanation:

Step1: Fill in DNA full name

Deoxyribonucleic Acid

Step2: Describe DNA structure

double helix

Step3: Name DNA discoverers & researcher

James Watson, Francis Crick; Rosalind Franklin

Step4: Define genetics

heredity and inherited traits

Step5: Name pea plant geneticist

Gregor Mendel; genetics

Step6: Select DNA replication strand action

separates

Step7: Select new/total DNA strands

two; four

Step8: Select DNA replication rules/pattern

base pairing; semi-conservative

Step9: Identify DNA part 9

sugar-phosphate backbone

Step10: Identify DNA part 10

Hydrogen Bond

Step11: Identify DNA part 11

nucleotide

Step12: Identify DNA part 12

Nitrogenous base

Answer:

1. Deoxyribonucleic Acid
2. double helix
3. James Watson, Francis Crick; Rosalind Franklin
4. heredity and inherited traits
5. Gregor Mendel; genetics
6. separates
7. two; four
8. base pairing; semi-conservative
9. sugar-phosphate backbone
10. Hydrogen Bond
11. nucleotide
12. Nitrogenous base