Answer:
Seed shape is determined by a single gene,
with the allele (R) for round peas dominan tover the allele (r) for wrinkled
peas (recessive trait).
It the alleles for the gene controlling
the seed shape are homozygous in a plant, it will show the character or
phenotype of same alleles, i.e., RR-round seed, rr-wrinkled seed.
On the other hand, if the
alleles of gene are heterozygous, they will express the phenotype of dominant
allele.
Rr - Round seed (r- wrinkled is
recessive)
This is the genetic basis of
wrinkled phenotype of pea seed.
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