When a segment of a chromosome breaks and later rejoins after $180^{\circ}$ rotation,it is known as
Deletion
Duplication
Inversion
Interstitial translocation
An organism which receives identical alleles of a particular gene from both parents is
Example of environmental determination of sex is/are
Barr bodies are
An albino lady marries a normal man having one gene for albinism. They have $3$ daughters and $1$ son. The son will be
Which of the following is an inherited trait in man