Question

human height shows enormous range and variability. there is evidence that although human height is controlled by many different genes, exposure to malnutrition or chemical contaminants like lead in early childhood can limit a persons adult height. which of the following influences contribute to the range of heights in humans? applies drag appropriate answer(s) here environmental effects polygenic inheritance epistasis codominance does not apply drag appropriate answer(s) here

Explanation:

• Environmental effects: The text mentions that exposure to malnutrition or chemical contaminants like lead in early childhood (environmental factors) can limit a person’s adult height.
• Polygenic inheritance: It states that human height is controlled by many different genes, which is the definition of polygenic inheritance.
• Epistasis: There is no indication in the given text that one gene’s effect is dependent on another gene (the concept of epistasis).
• Codominance: Codominance is when two alleles are both expressed in the phenotype (e.g., AB blood type). There is no mention of such a phenomenon related to height in the text.

Answer:

Applies: environmental effects, polygenic inheritance
Does Not Apply: epistasis, codominance