How many types of gametes will be produced by a $O$ Drosophila having following arrangement of two genes ($y*$ and $w*$) on $X-$chromosome?
$2$
$4$
$1$
$8$
Crossing over causes
In a test cross involving $F_1$ dihybrid flies, more parentaltype offspring were produced than the recombinanttype offspring. This indicates
Genes $A, B$ and $C$ are linked. Genes $A$ and $B$ are more close than $A$ and $C.$ Find out the correct option for the given statements
$I.$ $A$ might be before $B$ and $C$
$II.$ $B$ might be between $A$ and $C$
$III.$ $C$ might be between $A$ and $B$
$IV.$ More crosses has occurred between $A$ and $C$ than $A$ and $B$
Describe linkage and recombination in detail.
Mendel observed that some characters did not assort independently. Later researchers found it to be due to
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