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3.6 process information from secondary sources to analyse the outcome of dihybrid crosses when both traits are inherited independently and when they are linked
process information from secondary sources to analyse the outcome of dihybrid crosses when both traits are inherited independently and when they are linked
- Your teacher will give you information on dihybrid crosses when both traits are inherited independently. Before you start this activity it would be good to go back to your work on the core topic, Blueprint of Life and revise monohybrid crosses.
You could practise doing some dihybrid crosses when both traits are independent at Dihybrid Cross Problem Set The Biology Project, Mendelian Genetics, University of Arizona
- Once you have a good understanding of dihybrid crosses when traits are inherited independently (that is the genes for these traits are located on different chromosomes), you should then investigate inheritance when both traits are linked, that is, the genes for the traits are both located on the same chromosome.
A web site that could be useful on linkage, Dr Paul’s Virtual Biology Show,
Johnson County Community College, Overland Park, Kansas, USA
- When you have enough data from both situations analyse the results for each. Are they both equally predictable? Have you taken into account crossing over with the linked characteristics? Will this make a difference?