The first definite proof of mutagenic action of $X$-rays was given by
Muller
Hooker
Lister
Leeuwenhoek
Muller first gane the proof of mutagenic action of $X$-rays.
Sometimes the separation of twins is incomplete and these are borne attached are remain so even after. Such twins are known as
$A$ normal woman, whose father had colour blindness, married a normal man. What is the chance of occurrence of colour blindness in the progeny?
The traits controlled by the genes located on $X$ chromosome of human beings are said to be
Extranuclear inheritance is a consequence of presence of genes in
One of the following is sex-influenced character
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