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Linkage, Crossover & Recombination Video Lecture | Biology Class 12 - NEET

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FAQs on Linkage, Crossover & Recombination Video Lecture - Biology Class 12 - NEET

1. What is linkage in genetics?
Ans. Linkage in genetics refers to the tendency of genes located close to each other on a chromosome to be inherited together. These genes are said to be linked and their transmission as a unit is known as genetic linkage.
2. What is crossover or crossing over in genetics?
Ans. Crossover, also known as crossing over, is the exchange of genetic material between homologous chromosomes during meiosis. It occurs when two chromosomes, one from each parent, break at the same position and exchange segments, resulting in the recombination of genes.
3. What is recombination in genetics?
Ans. Recombination in genetics refers to the process through which new combinations of genetic material are produced by the exchange of DNA segments between homologous chromosomes during sexual reproduction. It leads to the shuffling of genetic information and the creation of genetic diversity.
4. How does linkage affect genetic inheritance?
Ans. Linkage affects genetic inheritance by influencing the likelihood of certain traits or genes being inherited together. Genes that are close to each other on the same chromosome tend to be inherited as a unit, while genes located far apart on different chromosomes assort independently.
5. What is the significance of crossover or recombination in genetics?
Ans. Crossover or recombination plays a crucial role in genetics as it promotes genetic diversity and variation. By exchanging genetic material between homologous chromosomes, crossover introduces new combinations of genes, leading to the creation of unique genetic traits and enhancing the adaptability of populations to changing environments.
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