Which one of the following symbols and its representation,used in human pedigree analysis,is correct?

Male pattern baldness is a/an..... trait.

Identify the correct and incorrect statements from the following:
$(1)$ Mendel is considered the father of modern genetics.
$(2)$ Down's syndrome is a sex-linked chromosomal disorder.
$(3)$ Sickle cell anemia is an example of point mutation.
$(4)$ Color blindness is a hereditary trait.
$(5)$ Triploid female flies are found in Drosophila.

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

Differences in twins suggest

Haemolytic jaundice is caused due to a dominant gene but only $10\%$ of the people who carry the gene actually develop the disease. $A$ heterozygous man marries a homozygous normal woman; what proportion of the children would be expected to develop the haemolytic disease?