Table of Contents
- 1 Why did wrinkled seeds show up in F2 generation even though they were not present in F1 generation?
- 2 What best describes the pure lines in Mendel’s experiment?
- 3 Why did traits like wrinkled and Green did not appear in F1 generation?
- 4 What is the difference between F1 and F2 crosses and why are both crosses necessary?
- 5 How did Mendel obtained recessive character in f2 generation?
- 6 How do you explain F1 and F2 generation?
Why did wrinkled seeds show up in F2 generation even though they were not present in F1 generation?
As the dominant always expresses itself , all the seeds were round . During the F2 cross : There were several crosses and homozygous recessive was formed . Two recessive alleles hence produced the wrinkled seed .
How are the result of the crosses differ if the red allele was dominant over the white allele explain both the F1 and F2 generations?
Answer: When red allele dominant over the white allele then the dominant character hifes the characteristics of recessive one.In F1 generation Pink is 100% and in F2 generation Red is 25% and Pink is 50% because of phenotype and genotype.
What best describes the pure lines in Mendel’s experiment?
Which best describes the pure lines in Mendel’s experiment? They were homozygous.
How do you make the F2 generation?
When the F1 hybrids were allowed to mate, the offspring resulted in plants producing either purple or white flowers. The offspring from the F1 generation comprise the second filial generation (or F2 generation). By definition, the F2 generation is the result of a cross between two F1 individuals (from F1 generation).
Why did traits like wrinkled and Green did not appear in F1 generation?
When the F1 generation plants were self-pollinated, however, their offspring—the F2 generation—showed all possible combinations of the two characteristics. Some had green round seeds, for example, and some had yellow wrinkled seeds. These combinations of characteristics were not present in the F1 or P generations.
What were the phenotypes of Mendel’s F2 generation?
In the resulting F2 generation, 3/4 showed the dominant phenotype, and 1/4 showed the recessive phenotype. For example, when a round seed line was crossed to a wrinkled seed line, the F1 generation was all round, and the F2 generation showed a phenotypic ratio of 3 round : 1 wrinkled.
What is the difference between F1 and F2 crosses and why are both crosses necessary?
The term “F1” means the “first filial generation,” or the initial cross between two genetically distinct plants. An “F2” cross is the next generation, or the result of crossing two sister seedlings from the F1 cross. Selfing an F1 plant produces an F2 also.
Why does red and white alleles interact with one another?
This type of allelic relationship was termed codominance. It appears as if the red and white alleles are interacting in the heterozygote to generate the pink flowers. Another example of codominance can be seen by looking at a biochemical phenotype.
How did Mendel obtained recessive character in f2 generation?
When the F1 plants in Mendel’s experiment were self-crossed, the F2 offspring exhibited the dominant trait or the recessive trait in a 3:1 ratio, confirming that the recessive trait had been transmitted faithfully from the original P parent. Reciprocal crosses generated identical F1 and F2 offspring ratios.
What was the outcome of the f2 generation in Mendel’s first experiment?
Mendel’s Results The F2 generation plants that grew included white-flowered plants. Mendel noted the ratio of white flowered plants to purple-flowered plants was about 3:1. That is, for every three purple-flowered plants, there was one white flowered plant.
How do you explain F1 and F2 generation?
The parental generation (P) is the first set of parents crossed. The F1 (first filial) generation consists of all the offspring from the parents. The F2 (second filial) generation consists of the offspring from allowing the F1 individuals to interbreed .