MCQ
Fossils are dated now by
- AStratigraphic position
- BAmount of calcium residue
- CAssociation with other animals
- ✓Radioactive carbon $({C^{14}})$ contents
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$I$. Zoos
$II$. Seed/pollen banks
$III$. Gene bank and tissue cultures
$IV$. Botanical garden
Choose the correct option
Match the terms in column $I$ with their description in column $II$ and choose the correct option.
| Column $-I$ | Column $-II$ |
| $(A)$ Dominance | $(i)$ Many genesgovern a single character |
| $(B)$ Codominance | $(ii)$ In a heterozygousorganism only one allele expresses itself |
| $(C)$ Pleiotropy | $(iii)$ In a heterozygousorganism both alleles express themselves fully |
| $(D)$ Polygenic | $(iv)$ A single gene inheritanceinfluences many characters |