In order to determine whether variations of a character in a population were genetically controlled, the most appropriate procedure will be to

  • [AIIMS 1983]
  • A

    Count chromosomes and find out the variations in number in the population

  • B

    Examine $DNA$ and see if the population shows any variation

  • C

    Measure the variations and see if they are continuous or discontinuous

  • D

    Cross individuals of both extremes and see if the offsprings and parents show the same range of variations

Similar Questions

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is

$A$ $Y-$linked gene is responsible for hypertrichosis (long hair on ears). When an affected man marries a normal woman, what percentage of their daughters would be expected to have hairy ears?

Blood bank of the body or reservoir where the blood is stored and can be mobilized, is

Which one of the following mutation partially or fully reverses the harmful effects of previous mutation

In pea plants, red flowers $(R)$ are dominant over to white flowers $(r)$ and tall plants $(T)$ are dominant over to dwarf plants $(t)$. The table below shows the gametes and the possible offsprings produced in a dihybrid cross. The numbers $1$ to $16$ represent the genotypes of each individual cross $(e.g. 3 = RrTT)$

                $RT$      $Rt$     $rT$      $rt$

$RT$             $1$        $2$       $3$       $4$

$Rt$              $5$        $6$       $7$       $8$

$rT$              $9$        $10$     $11$     $12$

$rt$               $13$       $14$     $15$    $16$

If plant $7$ is crossed with plant $12$, then what proportion of the offsprings produced will be homozygous for both the recessive characters