MCQ
Emasculation is related to :
- AMass selection
- BClonal selection
- ✓Hybridization
- DPure line
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| $(a)$ Restriction endonuclease | $(i)$ Joins the $DNA$ fragements |
| $(b)$ Restriction exonuclease | $(ii)$ Extends primers on genomic $DNA$ template |
| $(c)$ $DNA$ ligase | $(iii)$ Cuts $DNA$ at specific position |
| $(d)$ Taq polymerase | $(iv)$ Removes nucleotides from the ends of $DNA$ |
Select the correct option from the following
$R$ : Climate of tropical region is more seasonal.
$(1)$ They have dark colour and high rate of reproduction and excrete solid urine.
$(2)$ They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hairs.
$(3)$ They feed on dry seeds and do not require drinking water.
$(4)$ They excrete very concentrated urine and do not use water to regulate body temperature.
Which two of the above statements for such animals are true ?