IB Biology (2016) - 3.2 - Chromosomes PPT

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4.05 MB   |   27 pages

PRODUCT DESCRIPTION

This 27-slide powerpoint presentation covers 'Topic 3.2 - Chromosomes' in the 2016 IB Biology curriculum. Each slide includes the specific learning objective as well as key vocabulary that

students should note. The unit is divided into two sections:

A - Pro & Eukaryotic Chromosomes
B - Karyograms

The presentation itself contains minimal information as it is intended to be used with teacher guidance. They are also formatted to be visually pleasing and to print well for handouts or

revision. Please see the preview file for an idea of the slide aesthetic and level of detail.

As always, please let me know if you have any suggestions for improvements. These are always a work in progress!


Learning Objectives:

U1: Prokaryotes have one chromosome consisting of a circular DNA molecule.
U2: Some prokaryotes also have plasmids but eukaryotes do not.
U3: Eukaryote chromosomes are linear DNA molecules associated with histone proteins.
U4: In a eukaryote species there are different chromosomes that carry different genes.
U5: Homologous chromosomes carry the same sequence of genes but not necessarily the same alleles of those genes.
U6: Diploid nuclei have pairs of homologous chromosomes.
U7: Haploid nuclei have one chromosome of each pair.
U8: The number of chromosomes is a characteristic feature of members of a species.
U9: A karyogram shows the chromosomes of an organism in homologous pairs of decreasing length.
U10: Sex is determined by sex chromosomes and autosomes are chromosomes that do not determine sex.
A1: Cairns’ technique for measuring the length of DNA molecules by autoradiography.
A2: Comparison of genome size in T2 phage, Escherichia coli, Drosophila melanogaster, Homo sapiens and Paris japonica.
A3: Comparison of diploid chromosome numbers of Homo sapiens, Pan troglodytes, Canis familiaris, Oryza sativa, Parascaris equorum.
A4: Use of karyograms to deduce sex and diagnose Down syndrome in humans.
S1: Use of databases to identify the locus of a human gene and its polypeptide product.
Total Pages
27
Answer Key
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IB Biology (2016) - 3.2 - Chromosomes PPT
IB Biology (2016) - 3.2 - Chromosomes PPT
IB Biology (2016) - 3.2 - Chromosomes PPT
IB Biology (2016) - 3.2 - Chromosomes PPT
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