Some bacteria able to grow in Streptomycin containing medium due to
- Natural selection
- Induced mutation
- Reproductive isolation
- Genetic drift
The Correct Option is A
Solution and Explanation
The correct option is (A) : Natural selection
Because bacteria can evolve resistance to streptomycin through a process known as natural selection, bacteria can proliferate in a solution containing streptomycin. Random mutations take place in the bacterium throughout this process, which leads to the development of antibiotic resistance. This allows it to keep growing in the medium. When under stress, such as when there is a nutritional shortage, induced mutation takes place. A population is split in half and reproductively separated from the other half through the process of reproductive isolation. Genetic diversity in a population is the product of genetic drift, which fixes harmful mutations. So, "natural selection" is the right response.
Top NEET Biology Questions
- The chronological order of human evolution from early to the recent is
- Upper part of sea/aquatic ecosystem contains
- Where is respiratory electron transport system (ETS) located in plants ?
- Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ?
- Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair. .
Pair of skeletal parts Category (a)$\,\,$ Sternum and ribs$\,\,$ Axial skeleton (b)$\,\,$ Clavicle and glenoid cavity$\,\,$ Pelvic girdle (c)$\,\,$ Flumerus and ulna$\,\,$ Appendicular skeleton (d)$\,\,$ Malleus and stapes$\,\,$ Ear ossicles
Top NEET Evolution Questions
- Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
Convergent evolution Divergent evolution (a) Eyes of octopus and mammals Bones of forelimbs of vertebrates (b) Thorns of Bougainvillea and tendrils of Cucurbita Wings of butterfly and birds (c) Bones of forelimbs of vertebrates Wings of butterfly and birds (d) Thorns of Bougainvillea and tendrils of Cucurbita Eyes of octopus and mammals - Correct order is
- Diversification in plant life appeared
- Similarities in organism with different genotype indicates
- Which of the following is correct order of the evolutionary history of man
Top NEET Questions
- A $100.0\, mL$ dilute solution of $Ag ^{+}$is electrolysed for $15.0$ minutes with a current of $1.25 \,mA$ and the silver is removed completely. What was the initial $\left[ Ag ^{+}\right]$?
- The time constant of C-R circuit is
- The chronological order of human evolution from early to the recent is
- The correct Boolean operation represented by the circuit diagram drawn is :
- The driver of a car travelling with speed $30\, m/sec$ towards a hill sounds a horn of frequency $600\, Hz.$ If the velocity of sound in air is $330\, m/s,$ the frequency of reflected sound as heard by driver is
Concepts Used:
Evolution and Natural Selection
Charles Darwin - was a British naturalist who proposed the theory of biological evolution by natural selection. Darwin derived evolution as "descent with modification," the idea that species change gradually, give rise to new species and share a common ancestor. Darwin had proposed natural selection - the mechanism for evolution. Because resources are short in nature, organisms with heritable traits that favor survival and reproduction will lean to leave more offspring than their peers, causing the traits to rise in frequency over generations. The consequence of natural selection on populations is to become adapted, or increasingly well-suited, to their environments steadily. Natural selection entirely depends on the environment and needs existing heritable variation in a group.
Read More: Types of Natural Selection