About 80% of the human population can taste the chemical phenolthiocarbamide(PTC)" while the otter 20% can't. This characteristi c is governed by a single gene with two alleles, a tasting allele and a non-tasting allele. What does this statistic tell us about which allele( tasting or non-tasting) is dominant?
1 answer:
Answer:
The tasting allele is dominant.
Explanation:
The law of dominance states that the dominant allele will always express itself in homozygous or heterozygous conditions. While, the recessive allele Can express itself only in Homozygous recessive condition. The phenotypic ratio in case of monohybrid cross is 3:1 where i.e , about 3 out of every four offspring tends to express the dominant trait. According to the given statistics,80% of the population can taste PTC and 20 % cannot. Thus The tasting allele is a dominant allele.
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