Question

Some green beetles appear among the red beetle because
A) Beetles become green by accumulating chlorophyll from the green leaves that they eat
B) Natural variations occur during sexual reproduction
C) Red beetles mimic the green colour of leaves whenever they see crows.
D) Beetles change colour from red to green

Answer 1

Hint: Natural selection evolution was first revealed by the discovery that more children are always born then they would reasonably survive.

Complete Answer:
- Evolution is a shift in the biological population's inherited traits over subsequent generations. These traits are the manifestations of genes expressed during reproduction from parent to offspring.
- Evolution happens as evolutionary mechanisms operate on this diversity, such as genetic drift and natural selection, resulting in certain traits being more dominant or uncommon within a population.
- This evolutionary mechanism has led to biodiversity at all stages of biological organisation, including ecosystems, individual organisms and molecules.

Now, let us find the solution from the options-
- Among the red beetles, certain green beetles occur because normal difference exists throughout sexual reproduction.
- Genetic diversity is beneficial and, over time, it makes populations adjust.
- Variations are passed onto the next generation that helps an organism live and replicate.
-Variations are removed from the population that impairs survival and replication.
- In only a few generations, this mechanism of natural selection will result in drastic improvements in the appearance, behavior, or physiology of individuals in a population.
- Meiosis and sexual reproduction incorporate multiple alleles in different forms to maximize genetic diversity as new alleles emerge.

Thus, the correct answer is option (B) Natural variations occur during sexual reproduction.

Note: Alfred Russel Wallace and Charles Darwin jointly formulated the modern hypothesis of evolution by natural selection in the mid-19th century, and it was laid out in description in Darwin’s book "On the Origin of Species".