Question

the effect of environmental factors on cell differentiation? the menstrual cycle is controlled by the hormones estrogen and progesterone. the plant hormones known as auxins stimulate cell elongation in roots and stems. the kidneys release more urine in response to an increase in blood pressure. the sex of turtles is determined by temperatures in the nest during incubation. clear all

Explanation:

The question asks for an example of the effect of environmental factors on cell differentiation. The first option is about hormonal control of the menstrual cycle (internal hormonal factors, not environmental). The second option is about plant hormones (auxins) stimulating cell elongation (internal plant - hormone - related, not environmental). The third option is about the kidneys' response to blood pressure (internal physiological response). The fourth option, where the sex of turtles is determined by nest temperatures (an environmental factor - temperature), shows an environmental factor (temperature during incubation) affecting cell differentiation (in this case, the differentiation that leads to male or female sex determination).

Answer:

The sex of turtles is determined by temperatures in the nest during incubation.