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.
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Name structure 1 in the Figure above.
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Name structure 2 in the Figure above.
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Name structure 3 in the Figure above.
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Name structure 4 in the Figure above.
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Name structure 5 in the Figure above.
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Name structure 6 in the Figure above.
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Name structure 7 in the Figure above.
8
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Name structure 8 in the Figure above.
A sequence of DNA is listed below:

5′ – TTAGGACCGATGCCG – 3′

3′ – AATCCTGGCTACGGC – 5′


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How many codons are in the DNA sequence above?
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How many amino acids would be produced if the DNA sequence is being expressed?
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How many nucleotides are there in the sequence of DNA?
12
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How many base pairs are there?
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How many hydrogen bonds are there in total?
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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.
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Alleles are ________________________.
A the same as genes.
B alternative forms of a gene.
C located on the centromere.
D located on non-homologous chromosomes.
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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.
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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.
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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.
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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.
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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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