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Patterns of inheritance

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Question 5

The inheritance of earlobe type is controlled by a single gene with two alleles: E E\,E for free earlobes (dominant) and e e\,e for attached earlobes (recessive).

People with free earlobes have the genotype EE EE\,EE or EeEeEe, while people with attached earlobes have the genotype eeeeee.

A survey of a local town showed that 14% of the population has attached earlobes.

Using the Hardy-Weinberg principle, calculate the percentage of heterozygous individuals in this town.

Use the equations:

p+q=1andp2+2pq+q2=1 p + q = 1\quad \text{and} \quad p^2 + 2pq + q^2 = 1 p+q=1andp2+2pq+q2=1

24.1%

39.2%

46.8%

62.6%

Patterns of inheritance Questions

  1. A Level
  2. /Biology
  3. /Patterns of inheritance