Solution :
Total number of salamanders or population of salamanders is given = 400
Out of theses salamanders, some have long toes while others have a short toes.
Number of individuals of salamanders having short toes = 256
The short toe individuals [tex]$(q^2) = 256/400$[/tex]
Therefore, [tex]$q=\sqrt{256/400}$[/tex]
= 0.8
p + q = 1
∴ p = 1 - q
= 1 - 0.8
= 0.2
The number of the heterozygous individuals = (2pq x 400)
= ( 2 x 0.2 x 0.8 ) x 400
= 0.32 x 400
= 128
