tall plants.
If two heterozygous tall plants are crossed, what percent of the offspring will be short? No worries!
Is tall plant dominant?
In such conditions, the dominant allele is always expressed and the recessive allele is masked. Considering this example, the allele for tallness is dominant and hence the plant will be tall.
Why tall plant is dominant?
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.
Why are some pea plants short while others are tall?
The tall gene is dominant in pea plants. The short gene is recessive. That is why plants with one tall gene and one short gene are always tall. Only plants with two short genes will be short.
Why are some pea plants short?
The recessive genes though present in the dominant individuals, these genes are suppresed by dominant genes. If the genotype is TT, then phenotype is Tallness of the plant. If the genotype if tt, then phenotype is dwarfness of the plant.
Why between tall and short characters tall is dominant?
Answer. Answer: According to this law, when two plants one tall and another dwarf are cross-pollinated, only tall plants appears in first generation which is dominant: In the living organisms the characters are transmitted from parents to their offspring as a gene, which occur in pair.
When a tall plant is crossed with a short plant?
When a tall and short plant are crossed, all of the offspring are tall. If the offspring self-fertilize, they produce tall and short plants in a ratio of 3:1 in the next generation.
Which phenotype is dominant?
A dominant allele produces a dominant phenotype in individuals who have one copy of the allele, which can come from just one parent. For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent.
Which law of inheritance is involved if a tall pea plant crossed with a short pea plant and produced all tall offspring?
Law of Segregation. Observing that true-breeding pea plants with contrasting traits gave rise to F1 generations that all expressed the dominant trait and F2 generations that expressed the dominant and recessive traits in a 3:1 ratio, Mendel proposed the law of segregation.
Why does Mendel choose pea plant?
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 the genotype of tall and short?
Phenotypes for plant height are tall or short. TT and Tt genotypes both expressed the tall phenotype because the T is dominant to t. Only the tt genotype expressed the short phenotype.
Which of these is a recessive trait in peas?
Mendel’s experiments showed that green is the recessive seed color in pea plants.
Why in nature do we find more tall pea plants than dwarf pea plants?
Considering tallness and dwarfness, tallness is more widespread among pea plants because. Tallness is dominant over dwarfness. Tallness is determined by one gene having many effects. No worries!
What pattern of inheritance is described when a tall plant is crossed with a short plant and the progeny are all intermediate in size between the parental plants?
So in this case what is happening is a tall plant and a short plant when you cross them it gives an intermediate height. So it’s because of incomplete dominance.
Why are some tea plants tall and others short in nature explain with reference to the role of genes in controlling characteristics?
All the plants are hybrid and have Tt genes . They all are tall because tallness is a dominant gene while the dwarfness is a recessive gene.
Where would a cross between a tall plant and short pea plant resulted in progeny that were all tall plants?
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because tallness is the dominant trait. Thus, tallness is the dominant trait.
Is being short recessive or dominant?
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.
Which of the following is true of dominant genes?
Answer and Explanation: The correct answer is b. It will always be expressed in a person who has the trait.
What is the trait of tall plant?
In corn, the trait for tall plants (T) is dominant to the trait for dwarf plant (t) and the trait for coloured kernels (C) is dominant to the trait for white kernels (c). In a particular cross of corn plant, the probability of an offspring being tall is 0.5 and probability of a kernel being coloured in 0.75.
Can short pea plants be heterozygous?
Could a short pea plant be heterozygous? No, if it is heterozygous that means it has one tall gene. The tall gene will always be dominant-and show itself-(the plant will be tall.) One pea plant is homozygous for yellow seeds.
What is the ratio of tall pea plant to short pea plant?
1:1
This shows that ratio of pure tall (TT) to pure short (tt) is 1:1.