The bottleneck effect is when the population of a species is reduced due to an environmental disaster or human activities. An example of the bottleneck effect is "Insecticide spraying eliminates all but a few of the beetles on an island". For the species to survive, the green beetle will either have to move to a new location and build a new colony or they will have to develop a resistance to the insecticide and then start to rebuild the existing colony
Answer:
this phenomenon is a natural consequence of evolutionary processes and continental drift
Explanation:
Marsupials are mammals in which newborn offspring are carried in a pouch of the female (mother) body. On the other hand, placentals are mammals that complete embryo development in the mother's body, in the placenta. All the extant marsupials are endemic to Australia and the Americas. It has been shown that marsupials diverged (evolved) in South America, Australia and Antarctica when these landmasses were joined. In Australia, marsupials evolved to fit an ecological niche, which can be attributed to geographic isolation due to continental drift, while placental mammals are relatively recent and more scarce (mainly bats and rodents) within this region.
Answer: D
Explanation:
Viruses are not typically considered to be living, and therefore are not in any of the three domains listed.
Answer:
The only mutations that matter to large-scale evolution are those that can be passed on to offspring . These occur in reproductive cells like eggs and sperm and are called germ line mutations . A single germ line mutation can have a range of effects : No change occurs in phenotype.
Explanation: