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What is the trait that always appears in the second generation?
A recessive trait reappears in the 2nd generation. The classic example of this would be Gregor Mendel's pea plant cross. He took 2 pea plants, one short and one tall, cut out some of their reproductive parts so they couldn't self pollinate, and crossed their pollen. However, instead of getting a medium sized plant, he got 4 tall plants. This generation is the first, or F1, generation. Where did the short trait go? Did it simply disappear? Or was it being masked? To find out, he let the F1 generation self-pollinate. Surprisingly, there were 3 tall and 1 short plants in the F2 generation. Although the short trait was recessive, it reappeared in the second generation.
When a tall homozygous plant was crossed with a short homozygous plant the F1 offspring were all tall. No short plants were present in the F1 generation. Which principle does this situation represent?
This situation represents Mendel's principle of dominance. In this cross, the tall allele is dominant over the short allele, resulting in all F1 offspring exhibiting the tall phenotype. Since both parent plants are homozygous, the F1 generation inherits one tall allele from the tall parent and one short allele from the short parent, but only the dominant tall trait is expressed.
In a certain species plant the allele for tallness is dominant over the allele for shortness.to determine wether a tall plant is heterozygous should be crossed with a?
To determine whether a tall plant is heterozygous, it should be crossed with a homozygous recessive plant (short plant). If any offspring are short, the tall plant must be heterozygous; if all offspring are tall, the tall plant is likely homozygous dominant. This test cross allows for the observation of inheritance patterns in the offspring.
In poppies tall is dominant over short and red is dominant over white If two plants of genotypes ttRr and TtRR were crossed and no mutations occuredwhat is the percentage of short white plants in F1?
Your F1 generation has 0% of short, white plants. Anything crossed with TtRR wil have at least one R = red. Possible alleles of plant ttRr: tR and tr (on the horizontal) Possible alleles of plant TtRR: TR and tR (on the vertical) Using a Punnett's Square: tR tr TR TtRR TtRr tR ttRR ttRr TtRR = Tall, Red TtRr = Tall, Red ttRR = Short, Red ttRr = Short, Red So, as you can see, all of the possibilities have at least one R, so they will all be red, since R is dominant.
How did mendel make th F1 generation for his expiriments?
Mendels' f2 generation produce a 3:1 ratio of tall plants. By crossing true tall with true short , homologous chromosomes, he wound up with three types of plants, true tall, true short, and tall with a short allele.
Mendel crossed a purebred tall plant with a purebred short plant. What was the phenotype of the f1 generation?
The phenotype of the F1 generation was all tall.
When Gregor Mendel crossed a tall plant with a short plant what where the results of the F1 generation?
The F1 generation of crossing a tall plant with a short plant resulted in all tall plants. This is because the tall trait is dominant and the short trait is recessive in Mendel's experiments with pea plants.
In certain plants tall is dominant to short If a heterozygous plant is crossed with a homozygous tall plant what is the probability that the offspring will be short?
0 (there is no chance it will be short since tall is dominant over short). Hope this helps! - Biology Student
What was the result when gregor mendel crossed a tall plant and a short plant?
Since the dominant allele in pea plant breeding is the tall allele, all of the offspring of this cross were tall. However, when he crossed two tall plants from the first filial generation, 75% of the second filial generation were tall, and 25% of the second filial generation were short, thus hinting at the mechanism of what we today recognize as genetic inheritance.
In the p generation a tall plant was crossed with a short plant. Short plants reappeared in the f2 generation because?
A cross between members of the F1 generation (Tt x Tt), results in the genotypic ratio of 1TT:2Tt:1tt genotypes in the F2 generation. Because the tall allele is dominant, the phenotypic ratio would be 3 tall:1 short in the F2 generation.
In the P generation a tall plant was crossed with a short plant No F1 plants were short Short plants reappeared in the F2 generation because?
A cross between members of the F1 generation (Tt x Tt), results in the genotypic ratio of 1TT:2Tt:1tt genotypes in the F2 generation. Because the tall allele is dominant, the phenotypic ratio would be 3 tall:1 short in the F2 generation.
What is the ratio if TT and tt are crossed?
When a true-breeding tall plant (TT) is crossed with a true-breeding short plant (tt), all the offspring in the first generation (F1) will be heterozygous (Tt) and exhibit the tall phenotype, as tall (T) is dominant over short (t). Therefore, the phenotypic ratio of the offspring will be 100% tall. If these F1 plants are then crossed with each other (Tt x Tt), the resulting phenotypic ratio in the second generation (F2) will be 3 tall (TT or Tt) to 1 short (tt).
How was it possible that there were short plants in the f2 generation if there werent any short plants in the f1 generation?
The reason why short plants reappeared in Mendel's F2 generation of pea plants was because their short trait was heterozygous. Both parents carriedÊthat recessive gene, so they passed it on to their offspring.
When gregor mendel crossed a tall plant with a short plant the F1 plant inherited what?
one tall allele and one short allele
What did Mendel predict was a probability of producing a tall plant from a genetic cross of two hybrid tall plant?
because he is only person who predict the probability of tall and short plants is tall plant was 3 in 4 and the short plant was 1 in 4
What did mendel predict was the probability of producing a tal plant from a genetic cross of two hybrid tall piants?
Mendel predicted a 3:1 ratio for producing a tall plant from a genetic cross of two hybrid tall plants. This means that there is a 75% probability of producing a tall plant and a 25% probability of producing a short plant.
What did Mendel predict was the probability of producing a tall plant from a genetic cross of two hybrid tall plants?
because he is only person who predict the probability of tall and short plants is tall plant was 3 in 4 and the short plant was 1 in 4
