the dominant shape of a pea pod is smooth. You know because the smooth trait shows up in the F1.
Which of the following is dominant trait in pea plant?
Explanation: Mendel based his experiments on pea plants and studied seven pairs of contrasting traits. Yellow seed colour is the dominant trait and green seed colour is the recessive trait.
Is inflated pod dominant or recessive?
dominant trait
Hint: For pod shape in pea plant inflated pod shape is a dominant trait whereas constricted pod shape is a recessive trait.
What is inflated pod and constricted pod?
For pod shape in pea plant inflated pod, the shape is a dominant trait whereas constricted pod shape is a recessive trait.
Why is the pea wrinkled seed allele a recessive allele?
Why is the pea wrinkled-seed allele a recessive allele? The trait associated with the allele is not exhibited in heterozygotes. Mendel studied the inheritance of several types of pea-plant traits, including seed color.
How do you know which traits are dominant in an organism like a pea plant quizlet?
If the organism has two dominant alleles for a trait then the trait is dominant. If there is one dominant allele and one recessive, then the trait is still dominant. Why would a cross between a pea plant purebred for inflated pods and a pea plant purebred for constricted pods would produce only inflated-pod offspring.
Which colour of pea flower is dominant?
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Trait | Dominant Expression | Recessive Expression |
---|---|---|
Color of seed albumen (Y) | Yellow | Green |
Color of flower (P) | Purple | White |
Form of ripe pods (I) | Inflated | Constricted |
Color of unripe pods (G) | Green | Yellow |
Which one is dominant inflated or constricted?
The trait to produce inflated pods is dominant over the constricted pods. The green colour of pod is dominant over yellow colour of pod.
How do Mendel’s experiments show that traits Maybe dominant or recessive?
Mendel’s experiments show that the Traits may be dominant or recessive by performing a monohybrid cross. Monohybrid cross between two pure breeding varieties always obtained hybrid progeny exhibiting one parental trait while the opposite trait was never expressed in the F1 generation.
What is the genotype of inflated pod?
If our unknown plant is homozygous (PP), all of the offspring will have inflated pods (genotypes Pp). If our unknown plant is heterozygous (Pp), then half of the offspring will have inflated pods (Pp) and half will have constricted pods (pp).
What is a pod shape?
Oval in shape, symmetrical about the middle, i.e. like a squashed circle (e.g. Castanospermum australe).
What is dominance law?
Mendel’s law of dominance states that: “When parents with pure, contrasting traits are crossed together, only one form of trait appears in the next generation. The hybrid offsprings will exhibit only the dominant trait in the phenotype.” Law of dominance is known as the first law of inheritance.
What is the genotype for constricted pod?
A pea plant heterozygous for inflated pods (Ii) is crossed with a plant homozygous for constricted pods (ii).
Genotype | Red blood cell appearance | Phenotype (blood group) |
---|---|---|
IAIB | Carbohydrate A and B | AB *codominance* |
ii | No carbohydrates | O |
What is the phenotype of round wrinkled seed shape?
Mendel’s First Law of Genetics (Law of Segregation)
Parental Cross | F1 Phenotype | F2 Phenotypic Ratio |
---|---|---|
Round x Wrinkled Seed | Round | 5474 Round:1850 Wrinkled |
Yellow x Green Seeds | Yellow | 6022 Yellow:2001 Green |
Red x White Flowers | Red | 705 Red:224 White |
Tall x Dwarf Plants | Tall | l787 Tall:227 Dwarf |
What type of mutation is wrinkled peas?
The wrinkled-seed mutant (rr) of pea (Pisum sativum L.) arose through mutation of the gene encoding starch-branching enzyme isoform I (SBE1) by insertion of a transposon-like element into the coding sequence. Two isoforms of starch-branching enzyme have been documented in the developing pea embryo.
What is the name of the gene that has a mutation in the wrinkled pea plant?
SBE1
Mendel requested that all his scientific materials be destroyed upon his death. However, Martin and colleagues are confident that SBE1 was the gene and the mutation studied by Mendel because this was the only mutant allele known at that time to confer wrinkled pea seeds, although other mutations are now known.
How does genotype determine phenotype quizlet?
How does the genotype of an organism determine its phenotype? By specifying what kinds of RNA and which structural, enzymatic, and regulatory protein molecules are produced. -Polypeptides determine phenotype by acting as structural, enzymatic, and regulatory proteins.
What is the phenotype of a plant with the genotype RR quizlet?
What is the phenotype of a plant with a genotype of RR? In snapdragons, flower color is controlled by incomplete dominance. The two alleles are Red (R) and White (W). The heterozygous genotype is expressed as pink.
What is the difference between genotypes and phenotypes?
A person’s genotype is their unique sequence of DNA. More specifically, this term is used to refer to the two alleles a person has inherited for a particular gene. Phenotype is the detectable expression of this genotype – a patient’s clinical presentation.
How many dominant characteristics are present in pea plant?
There were 7 characters of the pea plant which were selected by Mendel for the experiments. The characters which were chosen by Mendel for his study were stem height, flower colour, flower position, pod shape, pod colour, seed shape, seed colour. All these characters belong to different chromosomes in the pea plant.
What is a dominant trait in plant?
Dominant traits are those that are inherited unchanged in a hybridization. Recessive traits become latent, or disappear, in the offspring of a hybridization. The recessive trait does, however, reappear in the progeny of the hybrid offspring. An example of a dominant trait is the violet-flower trait.
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