Background information:
Probability is the mathematical chance that an event will occur. It can be expressed as a fraction or as a percentage.
To express probability as a fraction, the numerator is the number of times the option you are interested in could occur. The denominator is the total number of options available.
To express probability as a percentage, divide the numerator by the denominator, and multiply the answer by 100.
Offspring are equally likely to inherit either allele from their parents. It does not matter what the previous offspring inherited.
To calculate the probability that an offspring will have a particular genotype, multiply the probability of receiving one allele from mom with the probability of receiving one from dad. For example, for two heterozygous parents, the probability of an offspring having the genotype RR is
Sample Solution