For rock pocket mice, fur color is a phenotype
<h3>What are phenotypes?</h3>
Phenotypes refer to the morphological characters of organisms.
In other words, phenotypes refer to the physical appearance of living organisms.
In this case, the appearance of the rock pocket mice varied from darker fur on the black rock to lighter-colored fur on the lighter-colored rock. This means that the phenotype varies with the environment.
More on phenotypes can be found here: brainly.com/question/20730322
White blood cells are also called leukocytes or leucocytes
It has the potential to add new traits to future generations of a specific species (hopefully good ones) but it could also impact that species in a negative way and decimate the species, because mother nature is a significantly better genetic engineer then we will ever be and we don't always know exactly what the indirect impacts of the new genetic "advantages" we implement will be.
The hilum serves as the passageway for nerves and vessels
Answer:
The aim of the muscles in the heart is to transport blood,which is the fluid. As for protection the pericardium fluid is responsible
