Which of the following disorders is most likely to be recessive?

Identify the genetic disorders based on the following characteristics:
$(i)$ Presence of sickle-shaped $RBC$.
$(ii)$ Blood does not clot,leading to non-stop bleeding.
$(iii)$ The heterozygous female transmits the disease to sons.
$(iv)$ Both heterozygous parents transmit the disease to offspring.

If a colour blind female marries a man whose mother was also colour blind,what are the chances of her progeny having colour blindness (in $\%$)?

Who is known as the father of human genetics?

$A$ color-blind woman marries a man with normal vision. In their offspring,.........

In pedigree analysis,the symbol $ʘ$ is used for: