Expressed Sequence Tags $(ESTs)$ refers to:

Choose the incorrect statement regarding the observations drawn from the Human Genome Project.

The dystrophin gene has ...... bases.

Which of the following is an incorrect statement $:$
$(A.)$ Chromosome number $(2n-1)$ is an example of monosomy.
$(B.)$ Expressed Sequence Tags $(ESTs)$ refers to novel $DNA$ sequences.
$(C.)$ Due to a high degree of polymorphism,the size of $VNTR$ varies from $0.1$ to $20 \ kb$.

The approach of focusing on all genes that are expressed as $RNA$ is known as .........

How many genes are present on the $Y$ chromosome?