Question
Dominant characters and Recessive characters.
| 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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| Column A | Column B |
| (1) Organism | (a) Large unit with specific climatic zone |
| (2) Population | (b) Different species in particular area |
| (3) Community | (c) Same species in a geographical area |
| (4) Biome | (d) Basic unit of ecological hierarchy |
