Biology, 25.05.2020 19:57 titocerber
Which analogy best describes the role of homeotic genes, which are found in many organisms?
A. They act like a switch for initiating a pattern of development and cell differentiation.
B. They act like brakes for stopping differentiation and preserving a certain body plan.
C. They act like a role of dice that allows for unique variations in an organism.
D. They act like mechanics that fix mistakes in DNA replication or transcription.
Answers: 1
Biology, 21.06.2019 18:50
The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.
Answers: 2
Biology, 21.06.2019 22:00
In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .
Answers: 1
Biology, 22.06.2019 05:50
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
Answers: 2
Biology, 22.06.2019 13:10
Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.
Answers: 2
Which analogy best describes the role of homeotic genes, which are found in many organisms?
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