Explain linkage and recombination?
Answers
LINKAGE
Linkage explains why certain characteristics are frequently inherited together. For example, genes for hair color and eye color are linked, so certain hair and eye colors tend to be inherited together, such as blonde hair with blue eyes and brown hair with brown eyes.
RECOMBINATION
Recombination is a process of producing new combinations of alleles by the recombination of DNA molecules. It is also referred to as genetic recombination, as there is an exchange of genetic material (DNA) between two different chromosomes or between different regions of the same chromosome.
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Question:
Explain linkage and recombination?
Answer:
“Linkage and recombination are the phenomena that describe the
inheritance of genes.”
In linkage, two or more genes linked together are always inherited together in the same combination for more than two
generations, whereas
In recombination the genetic material is exchanged between different organisms which leads to the production of
offsprings with the combination of traits.
The chromosomal theory of inheritance came into existence long after Mendelian genetics. The lack of advanced technology and physical proof were two reasons for the rejection of Mendel’s concept of genetics. However, later
experiments confirmed Mendel’s results.
Biologists developed the chromosomal theory of inheritance. The work was further carried forward and proved by T.H.Morgan. This led to the concept of linkage and recombination of the genes.
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