184537
The distance between two genes in a chromosome is measured in cross-over units which represent
1 ratio of crossing over between them
2 percentage of crossing over between them
3 number of crossing over between them
4 none of these
Explanation:
The frequency of crossing over increases with the increase in the physical distance between the two genes. Recombination can takes place between any two genes on a chromosome. The amount of crossing over is a function of how close the genes are to each other on the chromosome. If two genes are far apart, for example at opposite ends of the chromosome, crossover and non-crossover events will occurs in equal frequency. Genes that are closer together undergo fewer crossing over events.
AIIMS-2008
Principle of Inheritance and Variation
184514
Mendel observed that certain character did not assort independently Later, scientist found that this is due to:
1 linkage in traits
2 crossing over
3 both (a) and (b)
4 dominance of one trait over the other
Explanation:
Mendel observed that certain character did not assort independently. Later, scientist found that this is due to linkage, because two or more genes of the same chromosome remain together during the process of inheritance.
Manipal-2006
Principle of Inheritance and Variation
184534
Primary source of allelic variation is
1 independent assortment
2 recombination
3 mutation
4 polyploidy
Explanation:
The primary source of allelic variation is recombination. Recombination during meiosis leads to the shuffling and exchange of genetic material between homologous chromosomes, creating new combinations of alleles in offspring.
AIIMS-2005
Principle of Inheritance and Variation
184509
One of the following is an example of complete sex linkage .
1 Total colour blindness
2 Retinitis pigmentosa
3 Myopia
4 Nephritis
Explanation:
Myopia is an example of complete sex linkage. Complete linkage is exhibited when the genes for a particular character are present very close to one another. It is due to non-break in gene recombination situated on a chromosome.
184537
The distance between two genes in a chromosome is measured in cross-over units which represent
1 ratio of crossing over between them
2 percentage of crossing over between them
3 number of crossing over between them
4 none of these
Explanation:
The frequency of crossing over increases with the increase in the physical distance between the two genes. Recombination can takes place between any two genes on a chromosome. The amount of crossing over is a function of how close the genes are to each other on the chromosome. If two genes are far apart, for example at opposite ends of the chromosome, crossover and non-crossover events will occurs in equal frequency. Genes that are closer together undergo fewer crossing over events.
AIIMS-2008
Principle of Inheritance and Variation
184514
Mendel observed that certain character did not assort independently Later, scientist found that this is due to:
1 linkage in traits
2 crossing over
3 both (a) and (b)
4 dominance of one trait over the other
Explanation:
Mendel observed that certain character did not assort independently. Later, scientist found that this is due to linkage, because two or more genes of the same chromosome remain together during the process of inheritance.
Manipal-2006
Principle of Inheritance and Variation
184534
Primary source of allelic variation is
1 independent assortment
2 recombination
3 mutation
4 polyploidy
Explanation:
The primary source of allelic variation is recombination. Recombination during meiosis leads to the shuffling and exchange of genetic material between homologous chromosomes, creating new combinations of alleles in offspring.
AIIMS-2005
Principle of Inheritance and Variation
184509
One of the following is an example of complete sex linkage .
1 Total colour blindness
2 Retinitis pigmentosa
3 Myopia
4 Nephritis
Explanation:
Myopia is an example of complete sex linkage. Complete linkage is exhibited when the genes for a particular character are present very close to one another. It is due to non-break in gene recombination situated on a chromosome.
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Principle of Inheritance and Variation
184537
The distance between two genes in a chromosome is measured in cross-over units which represent
1 ratio of crossing over between them
2 percentage of crossing over between them
3 number of crossing over between them
4 none of these
Explanation:
The frequency of crossing over increases with the increase in the physical distance between the two genes. Recombination can takes place between any two genes on a chromosome. The amount of crossing over is a function of how close the genes are to each other on the chromosome. If two genes are far apart, for example at opposite ends of the chromosome, crossover and non-crossover events will occurs in equal frequency. Genes that are closer together undergo fewer crossing over events.
AIIMS-2008
Principle of Inheritance and Variation
184514
Mendel observed that certain character did not assort independently Later, scientist found that this is due to:
1 linkage in traits
2 crossing over
3 both (a) and (b)
4 dominance of one trait over the other
Explanation:
Mendel observed that certain character did not assort independently. Later, scientist found that this is due to linkage, because two or more genes of the same chromosome remain together during the process of inheritance.
Manipal-2006
Principle of Inheritance and Variation
184534
Primary source of allelic variation is
1 independent assortment
2 recombination
3 mutation
4 polyploidy
Explanation:
The primary source of allelic variation is recombination. Recombination during meiosis leads to the shuffling and exchange of genetic material between homologous chromosomes, creating new combinations of alleles in offspring.
AIIMS-2005
Principle of Inheritance and Variation
184509
One of the following is an example of complete sex linkage .
1 Total colour blindness
2 Retinitis pigmentosa
3 Myopia
4 Nephritis
Explanation:
Myopia is an example of complete sex linkage. Complete linkage is exhibited when the genes for a particular character are present very close to one another. It is due to non-break in gene recombination situated on a chromosome.
184537
The distance between two genes in a chromosome is measured in cross-over units which represent
1 ratio of crossing over between them
2 percentage of crossing over between them
3 number of crossing over between them
4 none of these
Explanation:
The frequency of crossing over increases with the increase in the physical distance between the two genes. Recombination can takes place between any two genes on a chromosome. The amount of crossing over is a function of how close the genes are to each other on the chromosome. If two genes are far apart, for example at opposite ends of the chromosome, crossover and non-crossover events will occurs in equal frequency. Genes that are closer together undergo fewer crossing over events.
AIIMS-2008
Principle of Inheritance and Variation
184514
Mendel observed that certain character did not assort independently Later, scientist found that this is due to:
1 linkage in traits
2 crossing over
3 both (a) and (b)
4 dominance of one trait over the other
Explanation:
Mendel observed that certain character did not assort independently. Later, scientist found that this is due to linkage, because two or more genes of the same chromosome remain together during the process of inheritance.
Manipal-2006
Principle of Inheritance and Variation
184534
Primary source of allelic variation is
1 independent assortment
2 recombination
3 mutation
4 polyploidy
Explanation:
The primary source of allelic variation is recombination. Recombination during meiosis leads to the shuffling and exchange of genetic material between homologous chromosomes, creating new combinations of alleles in offspring.
AIIMS-2005
Principle of Inheritance and Variation
184509
One of the following is an example of complete sex linkage .
1 Total colour blindness
2 Retinitis pigmentosa
3 Myopia
4 Nephritis
Explanation:
Myopia is an example of complete sex linkage. Complete linkage is exhibited when the genes for a particular character are present very close to one another. It is due to non-break in gene recombination situated on a chromosome.
