Tall True Breeding Pea Plants Are Crossed By A Gardener?

The correct option is A 1 : 2 : 1:: Tall homozygous : Tall heterozygous : Dwarf. When a tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant, all the plants in the F1 generation will be tall with genotype (Tt). In tomatoes, tall vine (T) is dominant. A cross between true-breeding green-podded pea plants and true-breeding yellow-podded pea plants produces only green-podded plants. When the F1 generation is allowed to self-pollinate, three tall plants and one dwarf plant are formed.

The study of garden peas led to significant advancements in biology. In the mid-1800s, Austrian monk Gregor Mendel conducted monohybrid crosses, which involved mating two true-breeding individuals with different traits. In a Mendelian experiment, tall true-breeding pea plants were crossed with short true-breeding ones, and all offspring obtained in the F1 generation were tall (Tt).

A gardener crosses tall true-breeding pea plants with short true-breeding ones, and in the F1 generation, all pea plants were tall. When the F1 plants were self-pollinated, the resulting genotypes were in the F2 generation. In the one homozygous tall pea plant, the F1 plant was not true-breeding, and the F2 generation consisted of three tall plants and one dwarf plant.

In conclusion, the correct option for the genotypic ratio in a monohybrid cross is A 1 : 2 : 1:: Tall homozygous : Tall heterozygous : Dwarf.

What if a true breeding tall pea plant is crossed with a tall pea plant of unknown parentage?

The true-breeding tall pea plant genotype is TT, while the unknown-parentage tall pea plant may exhibit either TT or Tt. Mendel’s interpretation of the monohybrid cross suggests that all species in the F1 generation will exhibit the tall phenotype.

What is the genotype of a tall pea plant?

The height of pea plants is contingent upon their genotype, with those exhibiting the TT or Tt genotype tending to be taller, and those displaying the tt genotype, shorter.

What is the genotype of a true breeding tall pea plant?

The genotype of a true-breeding plant is represented as TT, whereas the genotype of a wrinkled seed is represented as rr. In the case of a true-breeding tall plant with wrinkled seeds, the genotype is represented as TTrr, whereas in the case of a true-breeding tall plant with round seeds, it is represented as TT Rr.

What is the true breeding plants?

True-breeding plants are genetically identical organisms that produce offspring with the same traits when self-fertilized. They have identical alleles for specific traits, which are homozygous. These plants can express phenotypes that are homozygous dominant or homozygous recessive. The breed concept is based on the resemblance between ancestors and offspring. True-breeding plants are always homozygous recessive, with two copies of the same recessive allele. This phenotype is expressed by a combination of two recessive alleles, such as red flowers in pea plants.

What are the genotypes of pea plants?

The study identifies four possible genotypes for the plant species in question, designated as PpYY, PpYy, ppYY, and ppYy. The former two genotypes result in the production of purple flowers and yellow peas, whereas the latter two genotypes yield white flowers and yellow peas. A 2 × 2 Punnett square is necessary for the analysis, as two alleles are homozygous. The study was conducted by Samantha Fowler, Rebecca Roush, and James Wise.

What is a cross between tall pea plant and its recessive parent known as?

A test cross represents a genetic crossing between the progeny of a dominant (F1) and a recessive (t) parent. To illustrate, a homozygous tall (TT) plant and a homozygous dwarf (tt) plant can yield heterozygous tall progeny (Tt) in the F1 generation. This cross is of great significance in the field of genetic engineering and can prove advantageous for both the parent and offspring.

What does it mean for pea plants to be true breeding?

Mendel’s research on inheritance was based on the garden pea, Pisum sativum, which naturally self-fertilizes, resulting in highly inbred, or “true-breeding” pea plants. This allowed him to avoid unexpected traits in offspring that might occur if the plants were not true breeding. The garden pea grows to maturity within one season, allowing for multiple generations to be evaluated over a relatively short time.

Mendel also performed hybridizations, mating two true-breeding individuals with different traits. This was done by manually transferring pollen from the anther of a mature pea plant of one variety to the stigma of a separate mature pea plant of the second variety.

First-generation crosses were performed on P (parental generation) plants, and the seeds produced from each cross were grown the following season. The offspring were called the F 1, or the first filial generation. After examining the characteristics in the F 1 generation, the seeds were allowed to self-fertilize naturally. The F 2, or second filial, generation was produced from the F 1 plants. Mendel’s experiments extended beyond the F 2 generation to the F 3, F 4, and other generations, but the ratio of characteristics in the P, F 1, and F 2 generations was the most intriguing and became the basis of his postulates.

What is the cross between pea plants?

Two pea plants, exhibiting round green and wrinkled yellow seeds, produce F1 progeny with round, yellow seeds. The process of selfing these plants results in the emergence of a novel combination of traits in the F2 progeny.

What is a tall true breeding garden pea plant crossed with?

A tall true-breeding garden pea plant was crossed with a dwarf true-breeding garden pea plant, resulting in a 1:2:1 ratio of tall homozygous, tall heterozygous, and dwarf genotypes when the F1 plants were self-sown.

Why is the F1 progeny always of tall plants when a tall pea plant is crossed with a short pea plant?

The pea plant exhibits a dominant trait of height, whereas the recessive trait is one of stature. Consequently, the progeny will consistently display the dominant trait, which is height.

Why did Gregor Mendel choose garden pea plants for his breeding experiments?

Gregor Mendel selected pea plants as the subject of his experiments due to their rapid growth, ease of breeding, and diverse traits. He selected pea plants for his research due to their ease of cultivation and the wide range of characteristics exhibited by the species, which made them an appropriate subject for investigation.