Biology
Grade-10
Easy
Question
A dominant gene determines the capacity of particular grasses to flourish on soil tainted with the hazardous element nickel. On polluted soil, 78 percent of seeds of the grass Agrestic tenuis germinated and grew. What percentage of these plants are heterozygous?
- 0.28
- 0.32
- 0.5
- 0.64
Hint:
0.64
The correct answer is: 0.64
This is done by Hardy-Weinberg principle.
=
dominant homozygous frequency (AA)
=
heterozygous frequency (Aa)
=
recessive homozygous frequency (aa)
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