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In pea plants, round seeds are dominant and wrinkled seeds are recessive.
Are round peas dominant or recessive?
Given an inheritance pattern of dominant–recessive, the genotypic and phenotypic ratios can then be determined. In pea plants, round peas (R) are dominant to wrinkled peas (r).
Are wrinkled seeds dominant or recessive?
It asked what the probability of these pea plants producing wrinkled peas. You need to understand: Wrinkled peas need to have genotype rr, since the wrinkled trait (r) is recessive.
Is having smooth seeds a recessive trait?
Having smooth seeds is a recessive trait. Having smooth seeds is a dominant trait. Both parents had a recessive allele for seed shape. Neither parent had a recessive allele for seed shape.
Are green pea seeds dominant or recessive?
Mendel’s experiments showed that green is the recessive seed color in pea plants.
What happened to the yellow pod characteristic in the F1 cross?
When true-breeding plants in which one parent had yellow pods and one had green pods were cross-fertilized, all of the F1 hybrid offspring had yellow pods. That is, the hybrid offspring were phenotypically identical to the true-breeding parent with yellow pods.
What is the dominant shape of a pea pod?
The dominant shape of a pea pod is smooth. You know because the smooth trait shows up in the F1. That’s why its allele is a capital letter. The symbol for the recessive allele for pod color is c (lower-case).
What is the probability of having offspring that have wrinkled seeds?
If two plants of genotype Ww are crossed, the probability an offspring has wrinkled seeds is 3/4, and the probability it has round seeds is 1/4.
What are the chances of having offspring with round yellow seeds?
According to the Product Law, the probability of getting a yellow round plant is equal to the product of the probability of getting a yellow-seeded plant (3/4) and the probability of getting a round-seeded plant (3/4).
What is the probability that an offspring will have wrinkled yellow seeds?
What is the probability that the offspring will have wrinkles seeds?? its a 50% chance that the seed will be wrinkled. define genotype and phenotype. Genotype is the organisms genetic makeup or allele combinations.
What do you mean by recessive trait?
Refers to a trait that is expressed only when genotype is homozygous; a trait that tends to be masked by other inherited traits, yet persists in a population among heterozygous genotypes.
How does a dominant trait appear in an individual?
A dominant trait is an inherited characteristic that appears in an offspring if it is contributed from a parent through a dominant allele. If an individual carries the same two alleles for a gene, they are homozygous for that gene (aa or AA); this is the case whether the alleles are recessive or dominant.
How are traits passed to offspring?
Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes. Some health conditions and diseases can be passed on genetically too. Sometimes, one characteristic has many different forms. For example, blood type can be A, B, AB or O.
What happens if you cross two heterozygotes?
When two heterozygous plants are crossed, the resulting progeny mostly show the dominant phenotype. But, the recessive phenotype reappears.
Are yellow pod dominant or recessive?
For pod color, there are two traits – green and yellow. Green pod color is dominant and yellow is recessive. The shape of the pod has two traits – inflated and constricted.
What color of pea seed is dominant?
Yellow Trait Dominant Expression Recessive Expression Form of ripe seed (R) Smooth Wrinkled Color of seed albumen (Y) Yellow Green Color of flower (P) Purple White Form of ripe pods (I) Inflated Constricted.
What conclusion can be obtained from a Monohybrid cross?
In monohybrid cross experiment the phenotype ratio for F2 generation is 3:1. Mendel’s Conclusions for Monohybrid Cross: Characters such as a height of a stem, a color of seed etc. are inherited separately as discrete particles or unit.
Does true breeding mean homozygous?
A true breeding is a kind of breeding wherein the parents would produce offspring that would carry the same phenotype. This means that the parents are homozygous for every trait. For this to occur the parents are homozygous for a trait — which means the parents must be both dominant or both recessive.
Is heterozygous always dominant?
An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele. Heterozygous means that an organism has two different alleles of a gene. Carriers are always heterozygous.
What is the dominant shape of a pea pod and why?
In the pea pod shape, the cross between constricted and smooth trait produced an offspring with a smooth pod shape. With this, we can infer that the alleles that encode for the smooth-pod shape are dominant because it is the trait which is expressed rather than the other trait.
When offspring show a blend of the parents traits one allele is dominant over the other?
When offspring show a blend of the parents’ traits, one allele is dominant over the other. In complete dominance, the heterozygous phenotype lies somewhere between the two homozygous phenotypes. A heterozygous individual that exhibits the traits of both parents is an example of codominance.
What is the probability of a homozygous recessive offspring?
If two heterozygotes are crossed, the probability that an offspring will be homozygous recessive is 25% or 0.25.
What will happen when round green and wrinkled yellow peas are crossed with each other?
Answer: 1) Round yellow is a dominant trait over wrinkled green. When the given parental plants (with genotype RRYY and rryy) are crossed, they will produce RrYy (Round yellow offsprings) in the F1 generation.
What is the probability of having green and wrinkled seeds?
The probability of having green and wrinkled seeds in a dihybrid cross for round and yellow seeds is 1:16. A dihybrid cross is a cross between two different genes that differ in two obeserved traits.
What is the probability that a cross between a hybrid pea plant with round seeds and one with wrinkled seeds will produce offspring with wrinkled seeds?
the probability that a cross between a hybrid pea plant with round seeds and one with wrinkled seeds will produce offspring with wrinkled seeds is 50% or 1/2.
What is the percentage of a homozygous dominant offspring?
PARENT GENOTYPES OFFSPRING PHENOTYPES pure (homozygous) dominant x anything 100% of offspring with dominant trait hybrid x homozygous recessive 50% dominant trait, 50% recessive trait hybrid x hybrid 75% with dominant trait & 25% with recessive trait homozygous recessive x homozygous recessive 100% recessive trait.
What is the probability of obtaining a round yellow seed in the F2?
What is the probability of obtaining a yellow seed in the F2? I know the answer is 9/16.
