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Genes & Genome: Understanding the Language of Our Genome
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by Siok Liu Lim
| 20 Questions
Note from the author:
A test of understanding for the terms used in describing genetics and genetic structures.
The Figure below shows a diagram of the chromosome.
1
10 pts
Name structure 1 in the Figure above.
2
10 pts
Name structure 2 in the Figure above.
3
10 pts
Name structure 3 in the Figure above.
4
10 pts
Name structure 4 in the Figure above.
5
10 pts
Name structure 5 in the Figure above.
6
10 pts
Name structure 6 in the Figure above.
7
10 pts
Name structure 7 in the Figure above.
8
10 pts
Name structure 8 in the Figure above.
A sequence of DNA is listed below:

5′ – TTAGGACCGATGCCG – 3′

3′ – AATCCTGGCTACGGC – 5′


9
10 pts
How many codons are in the DNA sequence above?
10
10 pts
How many amino acids would be produced if the DNA sequence is being expressed?
11
10 pts
How many nucleotides are there in the sequence of DNA?
12
10 pts
How many base pairs are there?
13
10 pts
How many hydrogen bonds are there in total?
14
10 pts
Gene is _______________.
A physical carriers of genetic materials.
B composed of DNA wrapped around proteins called histones.
C a discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA.
D a double-stranded nucleic acid composed of two long, polymeric chains of deoxyribose-containing nucleotides.
15
10 pts
Alleles are ________________________.
A the same as genes.
B alternative forms of a gene.
C located on the centromere.
D located on non-homologous chromosomes.
16
10 pts
Chromosomes are ______________________.
A identical in the information they carry and attached to each other at the centromere to form the chromosome.
B tightly condensed structures which carry genetic materials and are composed of DNA wrapped around proteins called histones.
C discrete units of hereditary information consisting of a specific nucleotide sequence in DNA.
D double-stranded nucleic acids composed of two polymeric chains of deoxyribose-containing nucleotides.
17
10 pts
Chromatins are ________________________.
A all genetic information present in an individual or possessed by an organism
B identical in the information they carryand attached to each other at the centromere to form the chromosome.
C double-stranded nucleic acid composed of two polymeric chains of deoxyribose-containing nucleotides.
D complexes of DNA and proteins in the nucleus, that condense to form chromosomes.
18
10 pts
Genome refers to ____________________________.
A gene & chromosome or all genetic information present in an individual or possessed by an organism.
B a discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA.
C alternative forms of a gene.
D physical carriers of genetic materials and are composed of DNA wrapped around proteins called histones.
19
10 pts
Sister chromatids are _____________________.
A present in different chromosomes.
B alternative forms of a gene.
C identical in the information they carryand attached to each other at the centromere to form the chromosome.
D double-stranded nucleic acid composed of two long, polymeric chains of deoxyribose-containing nucleotides.
20
10 pts
A gene encoded by 5 different alleles (A, B, C, D, E) exists in the human population. How many genotype combinations are possible? Show your working.
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