Based on Lyon’s hypothesis, what will be the number of Barr bodies found in a human female suffering from Down’s syndrome

  • [AIEEE 2004]
  • A

    $0$

  • B

    $1$

  • C

    $2$

  • D

    $3$

Similar Questions

The following diagram shows two chromosomes and the lettered number represents the genes

chromosome $1$ : 

$P$ $Q$ $R$ $S$ $T$ $U$ $V$

$W$

 

chromosomes $2$ :

$E$ $F$ $G$ $H$

Which of the following would result if a translocation occurred between chromosome $1$ and $2 ?$

What is the unit of crossing over

$A$ : Polyploids with odd number of chromosomes are propagated vegetatively.
$R$ : Seed formation is absent due to meiotic abnormality.

The barr body is observed in

If mother and father both are without pigments $(albinism)$, then