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4.Principles of Inheritance and Variation
normal
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 $2 ?$
A
| $P$ | $Q$ | $R$ | $S$ | $W$ | $V$ | $U$ |
$T$ |
|
$E$ |
$F$ | $G$ | $H$ |
B
| $P$ | $Q$ | $R$ |
$S$ |
|
$T$ |
$U$ | $V$ | $W$ |
$E$ |
$F$ | $G$ | $H$ |
C
| $P$ | $Q$ | $R$ | $S$ | $T$ | $U$ | $V$ |
$W$ |
|
$E$ |
$F$ | $H$ |
D
| $P$ | $Q$ | $R$ | $S$ | $T$ | $U$ | $V$ |
$W$ |
|
$E$ |
$F$ | $G$ | $H$ | $G$ | $H$ |
Solution
In translocation the segment of the one chromosome get attached to the other chromosome. Option $A$ indicates inversion. Option ' $b$ ' indicates translocation. Option ' $C$ ' indicates deletion and option ' $d$ ' indicates duplication
Standard 12
Biology
