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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They can calculate this by creating Punnett squares from the genotypes of the parents.
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They can calculate this by creating Punnett squares from the phenotypes of the parents.
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They can calculate this by creating a pedigree from the genotypes of the parents.
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They can calculate this by creating a pedigree from the phenotypes of the parents.
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Detailed explanation-1: -Punnet squares are used to predict the genotypes and phenotypes of offspring using known dominant and recessive genes for single gene traits. The genotype for one parent is written along the side of the square with dominant alleles written as capital letters and recessive alleles written as lowercase letters.
Detailed explanation-2: -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-3: -One probability rule that’s very useful in genetics is the product rule, which states that the probability of two (or more) independent events occurring together can be calculated by multiplying the individual probabilities of the events.
Detailed explanation-4: -Count the total number of boxes in your Punnett Square. This gives you the total number of predicted offspring. Divide the (number of occurrences of the phenotype) by (the total number of offspring). Multiply the number from step 4 by 100 to get your percent.