Inheritance
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... c. All of the offspring produced by the cross are said to be heterozygous.
To check whether the f1 generation are heterozygous for seed coat shape, it is possible to carry out a test cross by mating 2 ff1 offspring together. 3:1 (round:wrinkled).
Predicted ratios
The ratios in real life will not exactly match the theoretical results due to:
q Some organisms will die before sampling has taken place
q Some will escape (animals)
q Probability of something going wrong in fertilisation
q Larger number of samples are needed
Summary of monohybrid crosses
q Parental phenotypes
q Parental genotypes
q Parental gametes
q Fertilization using punnett square
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