Discuss the genetic basis of the wrinkled phenotype of pea seed.

(N/A) The wrinkled phenotype of pea seeds is determined by the recessive allele $(w)$.
In the homozygous recessive condition $(ww)$,the starch branching enzyme is defective.
This leads to the production of less branched starch,which results in a lower osmotic pressure within the developing seed.
Consequently,the seed loses water during maturation and shrinks,resulting in the wrinkled appearance.