Answer: E. Polygenic
Explanation: The color of eyes and hair is due to quantity and accumulation of pigments such melanin. Melanin is synthesize by multiple enzymatic steps and every enzyme is codified by a different gene. That means polygenic inheritance, that several genes are implicated in determined the this trait and its difficult to trace since every gene has a sequence that can vary between families or human groups.
Answer:
C. The acidity of one solution is 10 times greater than the acidity of
the other.
The answer is “B” “the crust composed of elements “
The day before or the day after.
B. the complex interactions
and feeding relationships
between organisms within
an ecosystem
