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Inheritance

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Question 20

In pea plants, the allele for tall stem length (TTT) is dominant to the allele for short stem length (ttt). Two heterozygous tall pea plants (TtTtTt) are crossed. The table below shows the number of tall and short offspring produced from this cross:

PhenotypeNumber of offspring
Tall735
Short245

Calculate the number of these offspring that is most likely to be heterozygous.

[3]

Inheritance Questions

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