Linkage in Drosophila was first discovered by
Morgan
Bateson and Punnet
Sturtevant
Bridges
$A$ : Crossing over is exchange of genetic material between non-homologous chromosomes.
$R$ : It produces new linkages.
Describe linkage and recombination in detail.
Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$:
Mendel's law of Independent assortment does not hold good for the genes that are located closely on the same chromosome.
Reason $(R):$
Closely located genes assort independently.
In the light of the above statements, choose the correct answer from the options given below:
Percentage of recombination between $A$ and $B$ is $9\%$ and $C$ is $17\%$, $B$ and $C$ is $26\%$, then the arrangement of genes is
The tendency of genes to remain together during the process of inheritance is known as