Answer: D. A river separates members of a squirrel population that used to occupy the same geographical area.
Explanation:
Allopathic Speciation occurs when a geographic barrier (river, mountain, or canyon) separates members of a population
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It depends if it is a carrier or not, and if the trait is recessive or dominant trait
Answer:
The primary function of the plasma membrane is to protect the cell from its surroundings
Answer: the expression of certain genes is affected by temperature
Explanation:
For organisms to survive changing environmental conditions, a lot of molecular processes occur in the genes.
For the arctic fox, enzymes coded by specific genes are periodically "switched on or off" depending on the temperature.
Thus, the change in colour can be EXPLAINED by the expression of certain genes affected by temperature
Answer:
2 materials are exchanged between fetal and maternla blood
Explanation:
i just took this test and this was correct