Alleles of different genes that are on the same chromosome may occasionally be separated by a phenomenon known as

What is the name of the pea species used by Bateson and Punnett in their experiments?

In $Neurospora$,the arrangement of $8$ ascospores produced is $2a : 4a : 2a$. This indicates:

The scientists who proposed the theory of linkage are

$A$ scientist performed a gene mapping experiment in maize. He mapped genes on chromosomes based on the percentage of crossing over between different genes. One map unit corresponds to $1\%$ crossing over or recombination frequency. Based on the study of crossing over in maize, the scientist observed the following recombination percentages between genes $A, B, C,$ and $D$: $A$ and $D = 10\%$, $A$ and $C = 3\%$, $C$ and $D = 7\%$, $A$ and $B = 5\%$, and $C$ and $B = 8\%$. Based on these observations, determine the correct order of genes $A, B, C,$ and $D$ on the chromosome.

Which scientist explained linkage and recombination in Drosophila?