MCQ
Saltation stands for
- ✓Single step large mutation
- BSingle step small mutation
- CDouble step small mutation
- DDouble step large mutation
Hugo de Vries believed that mutation causes evolution and not the minor heritable variations, which was mentioned by Darwin
Mutation are random and directionless, while Darwin's variations are small and directional
Term 'saltation' is also called single step large mutation, which leads to new specks
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| Column – I | Column $- II$ |
| $(1)$ Failure of cytokinesis | $(p)$ To study in beritance of particular traits |
| $(2)$ Trisomy of 21 | $(q)$ Polyploidy |
| $(3)$ Error of metabolism | $(r)$ Down's syndrome |
| $(4)$ Pedigree analysis | $(s)$ Phenylketonuria |
$I.$ People should get vaccination to avoid infection
$II.$ Vaccination is available against polio, cholera, typhoid, tuberculosis and many othe disease
$III.$ Eradication of vectors are necessary in diseases like malaria and filariasis
$IV. $ Dengue and chikengunya, both are spread by Culex mosquitoes
Which of the statements given above are correct?