Why is there so little evidence of the period of heavy bombardment on earth
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The correct answer is optionD 134/200.
The frequency of the dominant allele can be calculated by the summation of the frequency of the homozygous individual frequency that has dominant allele and half of the heterozygous individuals, as half of the heterozygotes have dominant allele.
The frequency is no of individual of desired trait divided by total number of individual.
The calculation is shown below: