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What do you mean by crossing over?

Important Questions on Principles of Inheritance and Variation

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over

Give one significant difference between the following:

Linkage and crossing over

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
What map unit (Centimorgan) is adopted in the construction of genetic maps?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
A plant heterozygous for height and flower colour TtRr are selfed and 1600 of the resulting seeds are planted. If the distance between the loci controlling height and the flower colour is 1 centiMorgan (cM), then how many offsprings are expected to be short with white flower ttrr? 
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
The frequency of recombination between gene pairs on the same chromosome as a measure of the distance gene was explained by:
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
In a dihybrid cross between genes yellow, white and miniature characters, the parental % between yellow and white and recombination % is 92 and 8 respectively, and the cross between white and miniature characters, the recombination is 38% and parental is 62%. Identify the genetic map of these.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
The distance between two genes in a chromosome is measured in cross-over units which represent
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
Drosophila has four pairs of chromosomes. How many linkage groups does it have
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
Chromosome maps/ genetic maps were first prepared by
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
If map distance between genes P and Q is 4 units, between P and R is 11 units, and between Q and R is 7 units, the order of genes on the linkage map can be traced as follows:
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
The two _____ of a gene pair are located on homologous sites on homologous chromosomes.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
Which of the following sentences are correct?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
Number of linkage group in Pisum sativum is
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
What will be the number of linkage groups in maize if it has 10 pairs of chromosomes?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
The distance between the genes is measured by
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over

Fill in the blank with the correct option given in the bracket.

Due to incomplete linkage in maize, the ratio of parental and recombinants are _____.(7:1:1:7/1:2:7:1)

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
How many linkage groups are present in human male?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
Bateson used the terms coupling and repulsion for linkage and crossing over. Name the correct parent of coupling type along with its cross repulsion
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
The number of linkage groups in a sperm and ovum of human is, respectively:
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
In maize chromosome number is 2n = 20. The number of linkage groups in it shall be
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Linkage and Crossing Over
The split-gene arrangement further complicates the definition of a gene in terms of a _____.