Chromosomal Basis of Inheritance. — BIO BOTANY STD 12 — Question
Tamilnadu BoardEnglish MediumSTD 12BIO BOTANYChromosomal Basis of Inheritance.3 Marks
Question
Which type of testcross provides the data to construct an efficient genetic map? Explain.
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Answer
A more efficient mapping technique is to construct based on the results of the three-point test cross. It refers to analyzing the inheritance patterns of three alleles by test crossing a triple recessive heterozygote with a triple recessive homozygote. It enables to determine the distance between the three alleles and the order in which they are located on the chromosome. Double cross overs can be detected which will provide more accurate map distances.
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