as insects became exposed to pyrethroids, toxicity of pyrethroids weakened over time. which means that Most insects had the allele for pyrethroid resistance, but it remained masked. The allele for said pyrethroid resistance, evidently increased throughout the population.
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Specialized epidermal cells aim to increase the absorption surface in the root system of a grass plant.
<h3>What are specialized cells?</h3>
They are those committed to the fulfillment of a specific function within a cellular system or tissue.
These help to absorb nutrients and are found, fundamentally, in the piliferous zone of the root.
Therefore, we can conclude that specialized epidermal cells aim to increase the absorption surface.
Learn more about specialized cells in the root systems here: brainly.com/question/2351694
Answer: The DNA
Explanation: DNA is the only part of the cell that can mutate. That DNA could cause other cell parts to have mutations further down the road, though.
If you mean what part of the cell cycle, then it is interphase, while DNA is replicating.
Answer:
(B) Reduce his calorie intake to achieve a healthy weight
Explanation:
Research has shown that excess body fat or obesity increases the risk of cancer, since timothy is overweight, he needs to reduce his calorie intake to achieve a healthy weight
Answer:
Visceral motor
Explanation:
Peripheral nervous system is divided further into visceral and somatic nervous system. Somatic nervous system controls the skeletal muscles, joints and tendons. Visceral nervous system controls cardiac muscles, glands and smooth muscles.
Large intestine has smooth muscles so it is controlled by the visceral nervous system. It has further two divisions, sensory and motor. Sensory division carries signals from the muscle to the central nervous system whereas motor division carries signals from the central nervous system to the muscle which cause an action. Hence, visceral motor division carries signals to the smooth muscle in the large intestine.