If a true breeding strain of sweet pea self-fertilizes, what can be said about the progeny?

If a true breeding strain of sweet pea self-fertilizes, what can be said about the progeny?

• A. They will exhibit a range of phenotypes
• B. They will be genotypically different than the parent
• C. They are genotypically and phenotypically identical to the parent
• D. They may show new mutations

Answer: (C)

In the context of genetics, a true breeding strain refers to a population of plants that consistently produce offspring with the same traits when self-fertilized. This means that the individuals within the strain are homozygous for the traits being studied. When a true breeding strain of sweet pea self-fertilizes, every progeny produced will inherit the same alleles from the parent plants. Since the progeny are derived from homozygous parents, they will be genotypically identical to the parent. Since genotype directly influences phenotype, the progeny will also exhibit the same physical traits as the parents. Consequently, both the genotype and phenotype of the offspring will reflect that of the true breeding parents without variation, as there is no introduction of new alleles from other strains or random assortment of alleles during gamete formation. This ensures that the resulting progeny are genetically and phenotypically consistent with the traits of the original true breeding strain.

In the context of genetics, a true breeding strain refers to a population of plants that consistently produce offspring with the same traits when self-fertilized. This means that the individuals within the strain are homozygous for the traits being studied. When a true breeding strain of sweet pea self-fertilizes, every progeny produced will inherit the same alleles from the parent plants.

Since the progeny are derived from homozygous parents, they will be genotypically identical to the parent. Since genotype directly influences phenotype, the progeny will also exhibit the same physical traits as the parents. Consequently, both the genotype and phenotype of the offspring will reflect that of the true breeding parents without variation, as there is no introduction of new alleles from other strains or random assortment of alleles during gamete formation. This ensures that the resulting progeny are genetically and phenotypically consistent with the traits of the original true breeding strain.