The arrangement of genes on chromosomes is

Linked genes are present on

What do genetic maps represent?

Mendel was successful in discovering the principles of inheritance because:

What is a genetic map?

$A$ cross is made between two homozygous individuals, one with the wild type $(+, +)$ and the other with the mutant type $(a, b)$. In the $F_2$ generation (or test cross progeny), out of $1000$ individuals, $700$ are parental types. Calculate the distance between genes $a$ and $b$.