Question
Dominant characters and Recessive characters.

Answer

Dominant characters Recessive characters
$1.$ The characters that are expressed in the $F_1$ generation are called dominant characters. $1.$ The characters that are not expressed in the $F_1$ generation are called recessive characters. They are prevented from expressing themselves, due to presence of dominant allele.
$2.$ Dominant character is expressed either in homozygous or heterozygous combination. $2.$ Recessive characters are expressed only when they are in homozygous combination.
$3.$ Dominant characters cannot be masked by recessive characters.
E.g. Round seed and yellow seed are dominant characters in pea plant.
$3.$ Recessive characters are masked by dominant characters.
E.g. Wrinkled seed and green seed are recessive characters in pea plant.

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