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The Punnett square is a chart used to predict an results of a genetic cross It is used to determine the probability of the occurrence of each genotype among offspring. The Punnett square shows every possible combination for a specific cross of maternal and paternal genotypes
In this case, the Punnett square evidences a genetic cross between two heterozygous individuals and genotypic frequencies we can expect from this cross.
The Punnett square is a graphical representation used to determine the estimated genotypic and phenotypic frequencies obtained from a given genetic cross.
In this case, both parents are heterozygous (Rr), thereby they can produce two types of gametes (either R or r).
In consequence, from this cross, it is expected to observe a phenotypic frequency equal to 3:1 (3R_ : 1rr) and a genotypic frequency equal to 1:2:1 (1RR : 2Rr : 1 rr).
In conclusion, the Punnett square evidences a genetic cross between two heterozygous individuals and genotypic frequencies we can expect from this cross.
