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matrenka [14]
3 years ago
9

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?​
Biology
1 answer:
Rufina [12.5K]3 years ago
3 0

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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