Dominant traits.
(ii) Dominant traits cannot be expressed in heterozygous condition.
Which of the following traits of pea plant is expressed only in heterozygous condition?
In heterozygous condition, the dominant phenotype is expressed (Law of Dominance) while the recessive alleles are expressed in phenotypes only in the homozygous condition. Out of all the six traits mentioned in the question, it is only the violet petals trait that is dominant, all others are recessive.
Which one of the following pea trait is expressed in both homozygous and heterozygous condition?
(i) Dominant trait are expressed in both homozygous and heterozygous conditions.
Which of the following character express in only homozygous condition?
Recessive trait
Hence, the correct answer is Recessive trait can be expressed in homozygous conditions only.
Which of the following traits can be expressed in both homozygous?
A dominant allele can express itself in both the conditions, homozygous and heterozygous but recessive can be expressive only in homozygous condition.
Which of the following traits can be expressed in both homozygous as well as heterozygous condition?
Dominant traits
Explanation: Dominant traits are expressed in both homozygous and heterozygous conditions.
Which of the following is a heterozygous dominant genotype?
So, the correct answer is D “Tt”.
What’s an example of heterozygous?
If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair.
Why are recessive characters expressed in homozygous conditions?
In a homozygous condition, recessive allele can express itself as there is no dominant allele to mask its effect. Therefore, this is the correct option.
What is heterozygous and homozygous examples?
Examples of homozygous and heterozygous used in a sentence
If you have two copies of the allele for blonde hair, you are homozygous for that trait. Having one copy of the allele for blonde hair and one copy of the allele for brown hair makes you heterozygous for hair color.
Which of the following trait is only expressed in the presence of identical allele?
4) Green seed is expressed only in the presence of identical alleles.
Which of the following is heterozygous for two pairs of alleles?
Correct Option – A TtRR Explanation-‘Tt’ and ‘Rr’ are the two pairs of heterozygous alleles.
What is the difference between heterozygous and homozygous expression of genes?
Homozygous: You inherit the same version of the gene from each parent, so you have two matching genes. Heterozygous: You inherit a different version of a gene from each parent. They do not match.
What is heterozygous condition?
Heterozygous is a state of having inherited different forms of a particular gene from each one of your biological parents. Now, by different forms we generally mean that there are different portions of the gene where the sequence is different.
When both alleles are expressed in the heterozygous state?
Co-dominance: A condition in which both alleles of a gene pair in a heterozygote are fully expressed, with neither one being dominant or recessive to the other.
How do we write a heterozygous genotype?
An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb.
What is heterozygous in plant?
Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white). Carriers are always heterozygous.
What is homozygous condition?
Homozygous describes the genetic condition or the genetic state where an individual has inherited the same DNA sequence for a particular gene from both their biological mother and their biological father. It’s often used in the context of disease.
Why is a recessive allele unable to express itself in heterozygous state?
Answer: (i) A recessive allele is unable to express itself in heterozygous state due to the presence of a dominant allele. According to Mendel? s law of dominance, in a dissimilar (heterozygous) pair of factors which occur in pairs, one member will be dominant and other will be recessive.
What is correct for expressing recessive characters?
Recessive characters are expressed in both homozygous and heterozygous state. Recessive characters are expressed in both homozygous and heterozygous state.
Under what condition is a recessive allele expressed?
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.
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