Mendel cross tall and dwarf plant. In $F_{2}$-generation the observed ratio was $3: 1$ (tall: short). From this result, he deduced

$I.$ law of dominance

$II.$ law of independent assortment

$III.$ law of segregation

$IV.$ incomplete dominance

Choose the correct option

  • A

    $I, II, III$ and $IV$

  • B

    $I$ and $III$

  • C

    $II, III$ and $IV$

  • D

    $I, II$ and $III$

Similar Questions

If dwarf pea plant was treated with Gibberellic acid, it grew as tall as the pure tall pea plant. If this treated plant is crossed with a pure tall plant then the phenotypic ratio of is likely to be

  • [AIIMS 1980]

Match List $I$ with List $II$

List $I$ List $II$

$A$. Two or more alternative forms of a gene

$I$. Backcross
 $B$. Cross of $F_1$ progeny with homozygous recessive parents $II$. ploidy
$C$. Cross of $F_1$ progeny  with any of the parents $III$. Allele 
$D$. Number of  chromosome sets in plant $IV$. Test cross

Choose the correct answer from the options given below:

  • [NEET 2024]

In a monohybrid cross of plants with red and white flowered plants, Mendel got only red flowered plants. On self-pollinating these $F_1$ plants got both red and white flowered plants in $3:1$ ratio. Explain the basis of using $RR$ and $rr$  symbols to represent the geno type of plants of parental generation.

The genotypic ratio of a monohybrid cross will be

Self pollination between $Tt$ and $Tt$ plants results into genotype ratio of