Answer:
a.
Explanation:
pathogens may enter the body and cause illness.
Answer:
<h2>an organism in which both copies of a given gene have the same allel is homozygous. </h2>
Answer:
The theory of evolution was proposed by Charles Darwin and was first formulated in his book, "Origin of Species" in 1859. It focuses on the changes in species and populations over time
This could be many different traits. Hair color, eye color, and height are all possible traits that would be passed down from parent to offspring.
