Structure of DNA & Mutations

The sides of a DNA molecule are made of

• nitrogen bases

• alternating sugars and phosphates

• adenine and thymine

• chromatin and centromeres

The "rungs" of the DNA molecule are

• nitrogen base pairs

• sugar and phosphates

• deoxyribose paired with a nitrogen base

• phosphate paired with a nitrogen base

Which pairing below is correct?

• thymine-cytosine

• cytosine-adenine

• adenine-guanine

• cytosine-guanine

Which pairing below is correct?

• thymine-adenine

• cytosine-adenine

• adenine-guanine

• cytosine-cytosine

What would be the other half of this DNA strand?AATTCGCCGCTA

• AATTCGCCGCTA

• TTAAGCGGCGAT

• CCGGTATTATCG

• GGCCATAATAGC

Which statement below is true about mutations?

• They are harmful, not helpful

• They always affect an organism's appearance

• They can occur in a DNA sequence or on a whole chromosome

• They are helpful, not harmful

Which Karyotype displays a female with Down syndrome?

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Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.

• Substitution

• Deletion

• Insertion

• Inversion

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Identify the DELETION mutation form the following: 
ATG CCA AAT

• ATG TCA AAT

• ATG CCT AAA T

• ATC CA  AT

• ATG CCA AAT

Tags

NGSS.HS-LS3-2

Identify the SUBSTITUTION mutation form the following: 
ATG CCA AAT

• ATG TCA AAT

• ATG CCT AAA T

• ATC CA  AT

• ATG CCA AAT

Tags

NGSS.HS-LS3-2