<span> The organism is better able to survive and pass on traits to offspring than competing organisms.
For example;
A population of orange and green beetles. A bird likes the green beetles much better, thus they eat the green beetles. The surviving beetles (orange beetles) pass on their trait to their offspring.</span>
The Aerial steam carriage.
Answer:
A test mating of organisms is called as the "cross"
Explanation:
This phenomenon is done where the genetic orientation is not known, of an organism whose genetic make up for a trait there determines to which the gene will be carried by the former. It is the cross between the homozygous recessive and with the corresponding suspected heterozygote to determine the genotype later. The organism which is crossed with another organism that is homozygous for the recessive trait and thus the offspring of the test cross are studied.
Changes in the skeletons during the transition in habitat according to the theory of natural selection include their modes of histogenesis during the time. There were also observed to have modifications in the exoskeletons which they thought arise e<span>xclusively from the neural crest.</span>