Crossing over is the exchange of genetic material between homologous chromosomes during meiosis, which leads to variation in offspring.
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प्रश्न
What is crossing over?
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उत्तर
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संबंधित प्रश्न
Linkage and crossing-over of genes are alternatives of each other. Justify with the help of an example.
How many linkage groups are present in Drosophila melanogaster?
Analyse the following statements with respect to complete sex linkage and select the correct option.
- It is exhibited by genes located on non-homologous regions of X and Y chromosomes
- Y-linked trait is hypertrichosis.
- X-linked traits are haemophilia, red-green colour blindness, myopia (near sightedness).
The number of linkage groups of a particular species corresponds to its ______ number of chromosomes.
Blue eye colour is recessive to brown eye colour. A brown-eyed man whose mother was blue-eyed marries a blue-eyed woman. The children shall be ______.
What is true about the crossing over between linked genes?
When ‘Aa’ is crossed with ‘aa’, (A is dominant over a)
The percent crossing over is high when ______.
The enzyme involved in the process of crossing over is ______.
The formation of different types of gametes during sexual reproduction in plants is due to ______.
