The physical appearance of an organism is called its _______ which is determined by _______.
A: genotype; its phenotype
B: phenotype; its genotype
C: phenotype; its environment
D: phenotype; genotype and environment
E: character state; its specific traits
Answer: D: phenotype; genotype and environment
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Which of the following provides the likeliest explanation for the differences seen in the human population?
A. presence of parasites in different areas B. amount of sunlight in different areas C. the altitude in different areas D. natural selection
Metanephridia are found in ____
a. annelids b. mammals c. flatworms d. insects e. reptiles
The basic method of genetic analysis in humans is ____________________ rather than experimental. Fill in the blank(s) with the appropriate word(s)
The term "digestion" refers specifically to what?
A) taking food into the mouth B) chewing food C) breakdown of food into smaller pieces, either mechanically or chemically D) muscular contractions that move food through the digestive tract