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Question 18N.2.HL.TZ0.3a

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.2.HL.TZ0.3a
Level HL Paper 2 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 2]
18N.2.HL.TZ0.3a
(a)

State one similarity and one difference between the structure of genes and short tandem repeats.

[2]

Markscheme

similarity:

both made of DNA/nucleotides
OR
both have bases/adenine/cytosine/guanine/thymine
OR
neither has uracil ✔

 

difference: 

genes are longer/have longer DNA/base sequences «without repeats»
OR
genes have introns/exons but tandem repeats do not
OR
genes have base sequences that code for polypeptides/proteins and tandem repeats do not ✔

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