Match the Column-$I$ with Column-$II$ and select the correct option.

Column-$I$ (Traits)	Column-$II$ (Type of inheritance)
$i$. Roan cattle	$a$. Multiple allelism
$ii$. Pink flowered $Mirabilis \, jalapa$ plant	$b$. Co-dominance
$iii$. Sickle cell anaemia	$c$. Incomplete dominance
$iv$. Wings in $Drosophila$	$d$. Pleiotropism

Among the four couples given,who could be the biological parents of a child with $O^+$ blood group?

When the blood hemoglobin of a normal person and a sickle-cell patient is placed in an electrophoretic field,what will be observed?

Which of the following is $NOT$ an example of incomplete sex-linkage (pseudo-autosomal inheritance)?

Read the following statements and identify the correct ones.
$(1)$ Linkage and recombination were first understood in $Lathyrus$ $odoratus$.
$(2)$ Mendel's work was rediscovered by Correns,Tschermak,and de Vries,which was published in $1900$.
$(3)$ $T.H.$ Morgan is considered the father of experimental genetics.
$(4)$ $A$ child born to parents with thalassemia major can be affected by thalassemia.
$(5)$ In birds,the female is homogametic and the male is heterogametic.

The number of chromosomes present in a gorilla is: