One of the parents of a cross has a mutation in its mitochondria. In that cross,that parent is taken as a male. During segregation of $F_{2}$-progenies,that mutation is found in:
- AOne-third of the progenies
- BNone of the progenies
- CAll of the progenies
- DFifty per cent of the progenies
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The lines represented by the equation $x^2-y^2-x+3y-2=0$ are :
The vector $c \cdot (b+c) \times (a+b+c)$ is equal to
In a pseudo first order hydrolysis of ester in water,the following results were obtained.
$t/s$ $0$ $30$ $60$ $90$ $Ester/mol\, L^{-1}$ $0.55$ $0.31$ $0.17$ $0.085$
What will be the average rate of reaction between the time interval $30$ to $60$ seconds?
| $t/s$ | $0$ | $30$ | $60$ | $90$ |
|---|---|---|---|---|
| $Ester/mol\, L^{-1}$ | $0.55$ | $0.31$ | $0.17$ | $0.085$ |
What will be the average rate of reaction between the time interval $30$ to $60$ seconds?
Match the following columns:
Column-$I$ Column-$II$ $A$. Christmas tree $i$. Bennettites $B$. Fossil plant $ii$. Cycas $C$. Ornamental plant $iii$. Araucaria $D$. Tallest tree $iv$. Sequoia $v$. Thuja
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Christmas tree | $i$. Bennettites |
| $B$. Fossil plant | $ii$. Cycas |
| $C$. Ornamental plant | $iii$. Araucaria |
| $D$. Tallest tree | $iv$. Sequoia |
| $v$. Thuja |
Out of $30$ points in a plane,$8$ of them are collinear. The number of straight lines that can be formed by joining these points is:
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