Single-gene inheritance - Some genes discovered by observing segregation ratios - Predicting progeny proportions or parental genotypes by applying the principles of single-gene inheritance
3 important questions on Single-gene inheritance - Some genes discovered by observing segregation ratios - Predicting progeny proportions or parental genotypes by applying the principles of single-gene inheritance
Does the use of a fully recessive tester mean that meiosis in the tester parent can be ignored?
Yes, because all of its gametes are recessive and do not contribute to the phenotypes of the progeny
What is a tester?
Th fully recessive individual in a testcross.
An alternative test for heterozygosity (useful if a recessive tester is not available and the organism can be selfed).
To self the unknown: if the organism being tested is heterozygous, a 3:1 ratio will be found in the progeny
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