The trait associated with the allele is not expressed in heterozygotes.
A pea plant with wrinkled seeds must have two recessive alleles for the wrinkled seed trait (rr). This means that both of its parents must have contributed a copy of the recessive allele for the plant to exhibit wrinkled seeds.
Mendel described two seed shapes among the pea seeds in his study: Smooth and Wrinkled.
In his classic pea plant experiments, Gregor Mendel observed that among the offspring of a cross between round and wrinkled seeds, he counted about 5474 round seeds and 1850 wrinkled seeds in the F2 generation. This ratio approximates a 3:1 ratio, supporting his hypothesis of inheritance and the dominance of the round seed trait over the wrinkled seed trait.
Ressive genes. Smooth seeds are dominant in the pea plants Mendel used in his experiments.
He allowed plants whose seeds were round or wrinkled in shape to self pollinate. This trait has two variations-either round or wrinkled seeds.
In pea plants round seeds are dominant to wrinkled. So to have round seeds you either will have two dominant alleles (homozygous dominant) or one dominant and one recessive allele (heterozygous)
R represents the dominant round allele, and rrepresents the recessive wrinkled allele. :D
The seed you are referring to is likely a pea seed. Pea seeds can be either round or wrinkled in shape, depending on the genetic makeup of the plant variety.
A pea plant with wrinkled seeds must have two recessive alleles for the wrinkled seed trait (rr). This means that both of its parents must have contributed a copy of the recessive allele for the plant to exhibit wrinkled seeds.
Round and wrinkled seeds were observed by Mendel in Pea plant while experimenting on its hybridization process. Round or wrinkled stage of seed is a physical trait in pea plant.
The probability that an offspring will have wrinkled seeds is 2 in 4 or 50%
Mendel described two seed shapes among the pea seeds in his study: Smooth and Wrinkled.
Round seed shape in peas is an example of a trait controlled by a dominant allele because the presence of even one copy of the dominant allele results in the expression of the round seed shape phenotype. This means that individuals with either two dominant alleles (RR) or one dominant and one recessive allele (Rr) will have round seeds, while individuals with two recessive alleles (rr) will have wrinkled seeds.
He allowed plants whose seeds were round or wrinkled in shape to self pollinate. This trait has two variations-either round or wrinkled seeds.
Ressive genes. Smooth seeds are dominant in the pea plants Mendel used in his experiments.
He allowed plants whose seeds were round or wrinkled in shape to self pollinate. This trait has two variations-either round or wrinkled seeds.
well it depends on the letters that you are given, recessive alleles are ALWAYS lower case.An example answer would be: ss, where s would represent the recessive allele.