in peas plants the allele for purple flowers p is dominant over the allele for white flowers p which in conclusion about phenotype and genotype is possible

Answer 1

In pea plants, if the allele for purple flowers (P) is dominant over the allele for white flowers (p), we can draw conclusions about the possible phenotypes and genotypes based on Mendelian inheritance.

Genotypes and Phenotypes:

1. Genotypes:

   • Homozygous Dominant (PP): Two dominant alleles for purple flowers.
   • Heterozygous (Pp): One dominant allele and one recessive allele; still shows the purple flower phenotype because of the dominance of P.
   • Homozygous Recessive (pp): Two recessive alleles for white flowers.

2. Phenotypes:

   • Purple Flowers (PP or Pp): Both the homozygous dominant (PP) and heterozygous (Pp) plants will exhibit the purple flower phenotype due to the presence of at least one dominant allele.
   • White Flowers (pp): Only the homozygous recessive (pp) plants will exhibit the white flower phenotype since they carry no dominant alleles.

Summary:

• Possible Genotypes for purple flowers: PP, Pp
• Possible Genotypes for white flowers: pp
• Phenotype results:
  • Plants with genotypes PP or Pp will have purple flowers.
  • Plants with genotype pp will have white flowers.

In a typical cross involving these plants, you can apply a Punnett square to predict the offspring ratios based on the parental genotypes.