MCQ
$QRST$ is related with
- ✓Ventricular contraction or depolarization
- BAuricular contraction
- CAuricular relaxation
- DCardiac cycle
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$I.$ The property of metastasis is shown by malignant tumors
$II.$ Carcinogens are the agents that causes cancer
$III.$ Benign tumor causes little damage to body cells
Which of the statements given above are correct?
|
Column- $I$ |
Column- $II$ |
|
$A.$ $500$ million years ago |
$1.$ Sea weeds and few plants |
|
$B.$ $350$ million years ago |
$2.$ Jawless fishes |
|
$C.$ $320$ million years ago. |
$3.$ Inverbebrates |
| 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 |