GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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expressed when two different alleles are present.
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an allele only.
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a grid system for predicting genotypes from a cross
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not an allele.
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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 is a helpful tool that helps to predict the variations and probabilities that can come from cross breeding. This includes predicting crossing plants, animals, even humans with each other.
Detailed explanation-3: -A Punnett square is a grid* system for predicting all possible genotypes resulting from a cross. The outside edges, or axes*, of the grid represent the possible genotypes of gametes from each parent. The grid boxes show the possible genotypes of offspring from those two parents.
Detailed explanation-4: -The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach in 1905. The diagram is used by biologists to determine the probability of an offspring having a particular genotype.
Detailed explanation-5: -A completed Punnett square gives the probable outcome of a given cross. However, actual results may vary from the probable results, especially if only a few organisms are considered. Crosses that involve one trait, such as seed coat color, are called one-factor crosses.