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What does crossing over affect?
genes on the same chromosome
genes on the same chromosome are linked
What might affect whether a crossover event occurs between two genes?
the distance betwen genes. It is related to recombination frequency.
recombination frequency equivalence
genes on the same chromosome are in the same linkage group
the recombination frequency between genes is equal to map units
where certain alleles of one gene mask or cancel the effects of alleles of another gene
additive effects of genes
results in a variety of phenotypes that create a bell curve
What might cause a defective gene?
mutations in the catalytic site
frameshift--> truncated protein
a variation outside of the coding sequence (such as in the promoter)
- a step by step chemical reaction
- a gene affects another gene elsewhere
you can't assume the phenotype of one if you have another gene impacting / acting on the first gene
What is the Gaussian distribution?
the bell curve
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