LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why would a population with a large amount of genetic variation be more likely to survive a severe climate change in its environment?
A
Individuals will only create offspring well-suited to the climate change
B
The individuals would produce more offspring
C
Individuals better suited to the new climate will help less-suited individuals survive
D
Some individuals will posses traits better suited to the new climate and be more likely to pass them on
Explanation: 

Detailed explanation-1: -Maintaining high genetic diversity allows species to adapt to future environmental changes and avoid inbreeding. Inbreeding, which happens when there are small, isolated populations, can reduce a species’ ability to survive and reproduce.

Detailed explanation-2: -Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection).

Detailed explanation-3: -Higher population genetic diversity in the abundant species is likely due to a combination of demographic factors, including larger local population sizes (and presumably effective population sizes), faster generation times and high rates of gene flow with other populations.

Detailed explanation-4: -The answer is “Genetic variation allows new species to develop and adapt to ecological niches.” A genetically diverse population of individuals is more likely to survive than a population of individuals with similar genetic makeup.

There is 1 question to complete.