tall stem trait (T).
In pea plants, tall stem trait (T) is dominant over the dwarf stem trait (t).
What are the dominant traits in pea plants?
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| 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 |
Is the dwarf stem trait dominant or recessive?
The trait that is always apparent (tall) is dominant to the trait that is not always apparent (dwarf, recessive).
Why is a pea plant that is a hybrid for stem height tall?
A short plant has two recessive alleles (tt); hybrids have two different alleles for a trait (Tt). A hybrid would appear tall because the tall allele is dominant.
Which trait for plant height is dominant?
tallness
Mendel found that if true-breeding Tall [T] plants are crossed (bred) with true-breeding short [t] plants, all the next generation of plants, called as F1, are all tall. It shows that tallness is the dominant trait.
How many dominant traits are present in pea plant?
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. Inflated pod traits are dominant.
Which is a dominant trait that Mendel observed in pea plants?
These plants would serve as the P1 generation for the experiment. In this case, Mendel crossed the plants with wrinkled and yellow seeds (rrYY) with plants with round, green seeds (RRyy). From his earlier monohybrid crosses, Mendel knew which traits were dominant: round and yellow.
Which of the following is not a dominant character of pea plant?
So, the correct option is ‘Pod colour – Yellow‘.
Which of the following trait is dominant in Pisum sativum?
Hence, the correct option is Inflated Pods.
Can a short pea plant be hybrid for the trait of stem height?
It can not, because short plant has two recessive alleles, and hybrid has one dominant and one recessive, so the hybrid would be tall because of dominant allele.
Why are some pea plants tall and short in nature?
The pea plant will grow taller if the gene sequence is such that it creates a hormone that impacts the height attribute. If the gene sequence is in such a way that this hormone is only produced in little amounts and is controlled by specific conditions, it will have no effect on height growth. It will be a short plant.
Can a short pea plant ever be a hybrid explain why or why not?
No, a short plant has two recessive (tt); hybrids have two different alleles for at trait (Tt). A hybrid would appear tall because the tall allele is dominant.
Is height dominant or recessive?
Tallness is a dominant but polygenic trait , whereas dwarfness is a recessive trait , that is why some times both the tall parents do have a dwarf offspring too.
What are the two alleles for height in pea plants?
In pea plants, the gene for height has two alleles: tall (T) and short (t).
What was Mendel’s experiment with pea plants?
Mendel crossed pure lines of pea plants. Dominant traits, like purple flower colour, appeared in the first-generation hybrids (F1), whereas recessive traits, like white flower colour, were masked. However, recessive traits reappeared in second-generation (F2) pea plants in a ratio of 3:1 (dominant to recessive).
Which one of the following is dominant trait *?
Rh factor is a dominant character since one copy of gene is enough to express the trait.
What are the 7 traits of pea plants that Mendel studied?
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.
Why Mendel choose pea plant for his experiment Class 10?
Mendel selected pea plants for his experiments due to their easily detectable, contrasting characters. These are bisexual plants and grow to maturity in a single season only. In these plants, cross-pollination can also be done artificially.
What happened to the green trait in Mendel’s pea plants?
Mendel’s gene involved in pea color decides whether the chlorophyll in the pea will be broken down and degraded. When this gene isn’t working, the chlorophyll stays around and the pea is green. So in this case the recessive trait is indeed due to a broken gene.
What is dominant trait and recessive 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.
What do you mean by dominant traits class 10?
– Dominant trait is the first that appears or expressed visibly in the organism. For example- Baldness, Curly hair is dominant over straight hair etc. Dominant allele is expressed in capital letters like A versus a. Each parent provides one allele, the combinations are: AA, Aa, and aa.