IB Biology (2009) - Topic 4.3 - Theoretical Genetics PPT

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**Just a note that my school teaches this unit in Grade 9, so these slides are not very thorough and meant for more of a review than first time approach.

This powerpoint presentation covers Topic 4.3 in the IB Biology curriculum. Specifically, it covers the basics of theoretical genetics including: monohybrid Punnett squares and sex-linked diseases.


Each slide is labelled with the specific learning objective and animation/video links are provided in the slide notes. The slides are formatted to print well for handouts or revision and I can provide a pdf version upon request.

As always, please let me know if you have any suggestions for improvements.

These are always a work in progress!


**IB Biology Learning Objectives:

4.3.1 - Define genotype, phenotype, dominant allele, recessive allele, codominant alleles, locus, homozygous, heterozygous, carrier and test cross.

4.3.2 - Determine the genotypes and phenotypes of the offspring of a monohybrid cross using a Punnett grid.

4.3.3 - State that some genes have more than two alleles (multiple alleles).

4.3.4 - Describe ABO blood groups as an example of codominance and multiple alleles.

4.3.5 - Explain how the sex chromosomes control gender by referring to the inheritance of X and Y chromosomes in humans.

4.3.5 - Explain how the sex chromosomes control gender by referring to the inheritance of X and Y chromosomes in humans.

4.3.6 - State that some genes are present on the X chromosome and absent from the shorter Y chromosome in humans.

4.3.7 - Define sex linkage.

4.3.8 - Describe the inheritance of colour blindness and hemophilia as examples of sex linkage.

4.3.10 - Explain that female carriers are heterozygous for X-linked recessive alleles.

4.3.11 - Predict the genotypic and phenotypic ratios of offspring of monohybrid crosses involving any of the above patterns of inheritance.

4.3.12 - Deduce the genotypes and phenotypes of individuals in pedigree charts.
Total Pages
30
Answer Key
N/A
Teaching Duration
2 Days

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IB Biology (2009) - Topic 4.3 - Theoretical Genetics PPT
IB Biology (2009) - Topic 4.3 - Theoretical Genetics PPT