Because the allele that produces wrinkled peas is recessive, the offspring of this cross will all have wrinkled peas.
Is wrinkled dominant?
One of these factors is “dominant,” while the other is “recessive.” In the above example, the round-producing factor is dominant, and the wrinkled-producing factor is recessive.
Which pea plant traits are dominant?
The most often cited of Mendel’s genetic experiments with pea pods involves the color of the seedpods. Seedpods on pea plants are either yellow or green. Yellow seedpods are genetically recessive. Green seedpods are genetically dominant.
Is wrinkled or round dominant?
Round seed trait (R) is dominant over wrinkled (r) seed trait in Pea. Heterozygous round seeded plant (Rr) is crossed with wrinkled seeded plant (rr).
What is a recessive trait in peas?
Mendel’s experiments showed that green is the recessive seed color in pea plants.
Are wrinkled seeds recessive?
In pea plant, round seed is a dominant trait while wrinkled seed is a recessive trait.
Why is a wrinkled phenotype recessive?
The shape of the seeds are controlled by two alleles Round (R) and Wrinkled (r). Round shape is the dominant one and wrinkled shape is the recessive trait. Now for wrinkled phenotype to be shown, the genotype has to be recessive homozygous. Therefore, the genotype of wrinkled phenotype is rr.
Which traits are dominant and recessive in pea plant?
Green pod color is dominant and yellow is recessive. The shape of the pod has two traits – inflated and constricted. Inflated pod traits are dominant.
Why is the pea wrinkled seed allele a recessive allele?
Answer and Explanation: The allele for wrinkled seed shape in garden peas is considered recessive because the trait associated with the allele is not expressed in heterozygotes. Heterozygotes are individuals that have two different alleles for a particular gene locus.
Which of these is not a dominant trait of pea plant?
So, the correct option is ‘Pod colour – Yellow‘.
What is the genotype of a plant with wrinkled seeds?
Again, this is determined by the alleles a plant has at just one genetic locus. In this case, the allele for wrinkled seeds (W) is dominant to the allele for round seeds (w). This means that plants with both genotypes WW and Ww have wrinkled seeds, and only those with genotype ww have round seeds.
Why are round peas dominant?
If one chromosome has the starch mutation (r) but the other chromosome doesn’t (R), then the peas produce starch normally and have the rounded shape. In Mendelian genetics, this means that R is dominant over r. Each individual pea plant has three possible genotypes: “RR,” “Rr,” and “rr.”
What is the genotype of the parent with round and wrinkled seeds?
In a homozygous plant round seeds (R) are dominant over wrinkled seeds (r). (i)Draw a Punnett square to show the gametes and offspring when both the plants have heterozygous round seeds (Rr).
What is recessive and dominant trait?
Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive. If one of the alleles is dominant, then the associated characteristic is less likely to manifest.
Are yellow or green peas dominant?
Yellow peas (I) are dominant to green peas (i). The I gene is on chromosome 1. In all pea plants, immature peas are green.
What is the dominant seed color in a pea plant?
yellow
For the seed colour, yellow is the dominant trait and green is recessive while for the fruit (pod) colour, green is dominant and yellow is recessive.
What is the probability that the offspring will have wrinkled seeds?
Since capital R = round and is dominant that means that RR and Rr will all be round seeds. That means that ¾ or 75% of the offspring produced will be round. Since, wrinkled is rr, then ¼ or 25% of the offspring will be wrinkled. The genotype is the gene make-up of the offspring.
What is the genotype of a pure wrinkled garden pea plant?
The shape of the pea seeds is controlled by two alleles. S is dominant alleles and stands for smooth and s is recessive allele and stands for wrinkled. The wrinkled phenotype is shown when the genotype contains both the recessive alleles. The genotype of the wrinkled seeds of pea is ss.
What causes the wrinkled seed phenotype?
Increased sucrose concentration in the developing embryos of this mutant line causes increased uptake of water and thereby increases the cell size and fresh weight. During seed maturation in these mutant seeds a greater loss of water occurs. As a result, the wrinkled seed phenotype develops.
What is the genetic basis of wrinkled phenotype?
So, the wrinkled phenotype of pea seed is given by double recessive ‘rr’ genotype.
What was the outcome when Mendel crossed a round and wrinkled seed?
As a result of crossing these two pea variants, Mendel discovered that the round-seeded and wrinkled-seeded traits were two facets of the same character, suggesting to modern plant scientists that a single gene determines whether seeds are round or wrinkled.