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Question

What is the purpose of Punnett square?


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Solution

Punnett square

  1. It is a square shaped diagram used for forecasting genotypes in a cross or breeding experiment.
  2. Reginald C. Punnett, created this approach in 1905.
  3. Biologists use this to calculate the likelihood of an specialist gene being inherited in offspring.
  4. It is a table that shows the many combinations of paternal and maternal alleles.
  5. Mendelian inheritance is visualised using the Punnett square.
  6. In a breeding experiment, the Punnett square is used to determine the possible genotypes.
Using Punnett square, try to find out the nature of offspring of a test  cross. What ratio did we get?

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