A group of students were invited to taste phenylthiocarbamide (PTC). The ability to taste PTC is inherited by a single pair of genes. The allele for tasting T is dominant over the allele for non-tasting t. Among 798 students, 60.4% were tasters. What is the frequency of the allele for non-PTC tasting in the population?

The recessive allele that causes Ellis– van Creveld syndrome when homozygous has a frequency of about 0.07 in the Amish population of Pennsylvania, although its frequency is only about 0.001 in the generalpopulation. How many persons out of one thousand in the Amish population would be expected to have the disease? How many out of one million in the general population?

Assume Hardy-Weinberg conditions. In the American Caucasian population approximately 70% of people can taste the chemical phenylthiocarbamide (PTC) (the dominant phenotype), while 30% are non-tasters (the recessive phenotype). Determine the expected frequency of: Round up your answer to the nearest 100th. If your answer is 0.4, put 0.4. Both 0.40 and .4 will be graded as incorrect answers. homozygous recessive phenotype (q²) a) b) the recessive allele (q) c) the dominant allele (p) d) homozygous tasters (p²) e) heterozygous tasters (2pq)

Despite their excellent hygienic practices, the Kelatavicla lab experiences a devastating bacterial infection in their mouse population in 2012. Given the conditions in column B, predict what will happen to the frequency of the R allele over the years (increase, decrease, or remain the same) if the outbreak is not contained?

In a non-evolving population of wildflowers, there are 452 individuals with serrated leaves and there are 201 individuals with smooth leaves. If the allele for serrated leaves is dominant to the allele for smooth leaves, what is the expected frequency of the serrated allele?