Answer:
The answer is ( A peer review)
Answer: If it is almost impossible for a favorable trait to get passed down to offspring due to reproductive struggles, the species would not be able to undergo natural selection due to a lack in appearance of a trait.
Explanation:
If there are only two organisms with the adaptation, both of which lack any reproductive abilities, the odds of most of the species <em>not</em> dying out are very low. Only those two will have the adaptation and they rest will die out.
I hope I helped! :)
Genotype- gives your the genetic expression of an organism, while phenotype is the physical expression of an organism
It allows the scientist to determine the effect of the changed variable , it also allows samples and organisms to be tested under comfortable conditions
