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An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)?
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An allele is said to be recessive,when it expressed in a) heterozygous...
Recessive allele express itself only in presence of another recessive allele that is in HOMOZYGOUS condition only.
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An allele is said to be recessive,when it expressed in a) heterozygous...
Recessive Alleles:
Recessive alleles are genetic variations that only manifest their effects when an individual carries two copies of the allele. In other words, both copies of the gene must be recessive for the trait to be expressed.
Heterozygous and Homozygous:
To understand the expression of recessive alleles, it is important to distinguish between heterozygous and homozygous genotypes. In genetics, an individual can have two alleles for a particular gene, one inherited from each parent.
- Heterozygous: A heterozygous individual carries two different alleles for a specific gene. For example, if the gene in question is for eye color, a heterozygous individual might have one allele for blue eyes and one allele for brown eyes. In this case, the dominant allele, which determines the phenotype, will be expressed, while the recessive allele remains hidden.
- Homozygous: A homozygous individual carries two identical alleles for a specific gene. For instance, if both alleles for eye color are blue, the individual will have blue eyes. In this case, if the blue eye allele is recessive, it will be expressed.
Expression of Recessive Alleles:
Recessive alleles are expressed when an individual is homozygous for the recessive trait. The presence of a dominant allele masks the expression of the recessive allele in heterozygous individuals.
F2 Generation:
The F2 generation refers to the offspring resulting from a cross between two heterozygous individuals. In this generation, the genetic makeup of the offspring can vary, and different combinations of alleles can be present. Therefore, it is possible for recessive alleles to be expressed in the F2 generation if both parents carry the recessive allele.
Recessive Alleles: Heterozygous, Homozygous, and F2 Generation:
Recessive alleles can be expressed in both heterozygous and homozygous individuals. However, in the F2 generation, the expression of recessive alleles depends on the specific genetic makeup of the parents. If both parents carry the recessive allele, there is a chance that it will be passed on to their offspring and expressed in the F2 generation.
Therefore, the correct answer is d) both a) and b). Recessive alleles can be expressed in both heterozygous and homozygous individuals, as well as in the F2 generation if the necessary genetic conditions are met.
Recessive alleles are genetic variations that only manifest their effects when an individual carries two copies of the allele. In other words, both copies of the gene must be recessive for the trait to be expressed.
Heterozygous and Homozygous:
To understand the expression of recessive alleles, it is important to distinguish between heterozygous and homozygous genotypes. In genetics, an individual can have two alleles for a particular gene, one inherited from each parent.
- Heterozygous: A heterozygous individual carries two different alleles for a specific gene. For example, if the gene in question is for eye color, a heterozygous individual might have one allele for blue eyes and one allele for brown eyes. In this case, the dominant allele, which determines the phenotype, will be expressed, while the recessive allele remains hidden.
- Homozygous: A homozygous individual carries two identical alleles for a specific gene. For instance, if both alleles for eye color are blue, the individual will have blue eyes. In this case, if the blue eye allele is recessive, it will be expressed.
Expression of Recessive Alleles:
Recessive alleles are expressed when an individual is homozygous for the recessive trait. The presence of a dominant allele masks the expression of the recessive allele in heterozygous individuals.
F2 Generation:
The F2 generation refers to the offspring resulting from a cross between two heterozygous individuals. In this generation, the genetic makeup of the offspring can vary, and different combinations of alleles can be present. Therefore, it is possible for recessive alleles to be expressed in the F2 generation if both parents carry the recessive allele.
Recessive Alleles: Heterozygous, Homozygous, and F2 Generation:
Recessive alleles can be expressed in both heterozygous and homozygous individuals. However, in the F2 generation, the expression of recessive alleles depends on the specific genetic makeup of the parents. If both parents carry the recessive allele, there is a chance that it will be passed on to their offspring and expressed in the F2 generation.
Therefore, the correct answer is d) both a) and b). Recessive alleles can be expressed in both heterozygous and homozygous individuals, as well as in the F2 generation if the necessary genetic conditions are met.
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An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)?
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An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)?.
An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An allele is said to be recessive,when it expressed in a) heterozygous only b) homozygous only c) F2 generation d) both a) and b)?.
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