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How did mendel find out whether the recessive allele were still present in the f1 plants?
Wiki User
∙ 8y ago
he breeded the f1 plants with a recessive homozygous plant and if the offspring (f2) showed the recessive allele, then the recessive allele is still present in the f1 plant
Lydia Schulist
Wiki User
∙ 12y agoWiki User
∙ 13y agoMendel observed the recessive trait in the f2 generation, and figured out that it must still be present in the f1 generation, even though it wasn't shown.
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What is the kind of trait that seemed to vanish in the offspring produces in Mendel's first experiment?
Mendel's experiments showed the characteristics of genes that express complete dominance--that is, traits where one allele is completely dominant over another, and the recessive allele does not appear in the phenotype at all. Some of the specific traits that Mendel was testing include pea color (yellow or green, with green being completely dominant) pea surface texture (wrinkled or smooth, with smooth being dominant) and flower color (pink and white, with pink being dominant.)
How many choices were there for each pea plant trait mendel examineed?
Mendel examined one trait at a time in his pea plant experiments. For each trait, he had two choices: the dominant allele and the recessive allele. Therefore, there were two choices for each pea plant trait that Mendel examined.
What is the difference between the Principle of Dominance and the Principle of Segregation?
These are principles which Gregor Mendel discovered when he carried out his experiments on inheritance in pea plants. Mendel discovered that each character eg height of the plant, is controlled by two genes (which he called 'factors'), one from each parent. The Law of Segregation states that when gametes (sex cells: eggs and sperm) are produced, the two genes in each pair separate (segregate) and go to different cells. This means that eggs and sperm end up with only one copy of each gene, instead of a pair of genes. Mendel also discovered that genes occurred in alternative versions which we call alleles eg the height gene can be the tall allele or the short allele. If an individual plant inherits one tall allele and one short allele, the tall allele 'hides' the short allele and the plant is tall. The tall allele is called the dominant allele. Dominant alleles only need to be inherited from one parent to produce an effect. The short allele is called the recessive allele. A recessive allele must be inherited from both parents in order to produce an effect.
Mendel called an individual that has one dominant allele and onerecessive allele for a trait a purebrwd?
yes
In which generation were recessive traits visible Mendel's experiments?
F2 Generation
How did Mendel find out whether the recessive alleles were still present in the F1 plants?
he breeded the f1 plants with a recessive homozygous plant and if the offspring (f2) showed the recessive allele, then the recessive allele is still present in the f1 plant
True or False In heterozygous individuals only the recessive allele is expressed?
In heterozygous individuals, only the dominant allele is expressed. The recessive allele is present, but not expressed
Is it true that mendel assumed that a dominant allele had masked the corresponding recessive allele in the f1 generation?
No. A recessive trait is masked by a dominant trait.
How did Mendel find out whether the recessive alleles were still present in the f plants?
he breeded the f1 plants with a recessive homozygous plant and if the offspring (f2) showed the recessive allele, then the recessive allele is still present in the f1 plant
What is the discover in gregor mendel?
He gave the law of segregation & the law of independent assortment. He also gave the concept dominant and recessive allele.
What is the kind of trait that seemed to vanish in the offspring produces in Mendel's first experiment?
Mendel's experiments showed the characteristics of genes that express complete dominance--that is, traits where one allele is completely dominant over another, and the recessive allele does not appear in the phenotype at all. Some of the specific traits that Mendel was testing include pea color (yellow or green, with green being completely dominant) pea surface texture (wrinkled or smooth, with smooth being dominant) and flower color (pink and white, with pink being dominant.)
In Mendel's experiment why did traits show up in the f1 generation that were not present in the f1 generation?
the traits were recessive
How many choices were there for each pea plant trait mendel examineed?
Mendel examined one trait at a time in his pea plant experiments. For each trait, he had two choices: the dominant allele and the recessive allele. Therefore, there were two choices for each pea plant trait that Mendel examined.
What do the terms dominant and recessive mean?
ACCORDING TO GREGOR MENDEL'S LAW OF DOMINANCE:- Dominant Allele refers to the expressed trait in a pair of genes,while the dormant,suppressed trait is the recessive allele.
Are dominant traits more likely to be inheritd then recessive traits?
Yes. When looking at Gregor Mendel's laws of inheritance, the Dominant allele will always be inherited by the offspring, as it is more potent than the 'weaker' recessive allele (unless the recessive allele is present in both parents; this can be in the form of Aa or aa, but it must be present in both for the recessive allele to be present in the offspring). There are other cases, though, such as co-dominance, in which recessive alleles are more likely to be present in the offspring, but speaking in general terms, it is the Dominant (ex. AA / Aa) alleles that show up more commonly in offspring than the recessive (ex. aa) alleles.
What happen in Mendel experiment when a pea plant received two different alleles for the same trait?
He did an experiment with a tall pea plant and a small pea plant. He then went through 2 generations of breeding of these plants and noticed 3 distinct different types of plants. One type was really short, the other was average height, and the final was Tall.He combined 2 medium sized plants with each other (Tt) and (Tt).*T = Tall gene.*t = shortness gene.Put that into you Punnett square and you will get these answers:The small plant had a recessive gene (tt).The medium sized plant had the average set of genes (Tt).The tall plant also had a recessive gene (TT).The results were:1 Small Plant, 2 Medium Plants, and 1 Large Plant.The recessive allele was hidden by the dominant alleleThe recessive allele was hidden by the dominant allele.the recessive allele was hidden by the dominant allele. (novanet)The recessive allele was hidden by the dominant allele.Novanet Swagnovanet:The recessive allele was hidden by the dominant allele!
What happened in Mendel' experiment when a pea plant received two different alleles for the same trait?
He did an experiment with a tall pea plant and a small pea plant. He then went through 2 generations of breeding of these plants and noticed 3 distinct different types of plants. One type was really short, the other was average height, and the final was Tall.He combined 2 medium sized plants with each other (Tt) and (Tt).*T = Tall gene.*t = shortness gene.Put that into you Punnett square and you will get these answers:The small plant had a recessive gene (tt).The medium sized plant had the average set of genes (Tt).The tall plant also had a recessive gene (TT).The results were:1 Small Plant, 2 Medium Plants, and 1 Large Plant.The recessive allele was hidden by the dominant alleleThe recessive allele was hidden by the dominant allele.the recessive allele was hidden by the dominant allele. (novanet)The recessive allele was hidden by the dominant allele.Novanet Swagnovanet:The recessive allele was hidden by the dominant allele!
