MCQ
Mutations:
- ATake place gradually and in small steps
- BAre all heritable and give rise to new species
- CAre subject to natural selection
- DBoth B and C
Explanation:
Mutation is a permanent change of the nucleotide sequence of the genome of an organism, virus or extrachromosomal DNA or other genetic elements. It is subject to natural selection. It was first explained by Hugo de Vries. Germline mutation are the type of mutation that takes place in the germline cells and are heritable. Mutation lead to the evolution of new species.
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$R$ : Climate of tropical region is more seasonal.
| Column $I$ | Column $II$ |
| $(a)\; XX-XO$ method of sex determination | $(i)$ Turner's syndrome |
| $(b)\; XX-XY$ method of sex determination | $(ii)$ Female heterogametic |
| $(c)$ Karyotype$-45 $ | $(iii)$ Grasshopper |
| $(d)\; ZW-ZZ$ method of sex determination | $(iv)$ Female homogametic |
Select the correct option from the following