GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a graph
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a flow chart
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a data table
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a Punnett square
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Detailed explanation-1: -A Punnett square is a chart that allows you to determine the expected percentages of different genotypes in the offspring of two parents. A Punnett square allows the prediction of the percentages of phenotypes in the offspring of a cross from known genotypes.
Detailed explanation-2: -A Punnett Square (so named after it’s creator, Reginald C. Punnett) is a chart drawn to determine the probable results of a genetic cross. It will show you every possible combination of offspring that result from a cross. Therefore, a Punnett square is a prediction that estimates what we should see in nature.
Detailed explanation-3: -A Punnett square shows the probability of an offspring with a given genotype resulting from a cross. It does not show actual offspring. For example, the Punnett square in Figure 3 shows that there is a 25% chance that a homozygous recessive offspring will result from the cross Aa x Aa.