Answer:
They learned to salivate at the sound of a bell.
Explanation:
<em>He learned how to make his dog react this way, knowing that he would get food in return, due to the conditioned stimulus, which makes an individual react in a certain way, because that thing is associated to something else. It's like how we train dogs to "sit" and then we give them a treat to do so.</em>
The correct answers would be, Environmental, Epigenetic, Switches.
Explanation:
Individuals who acquire a health condition with no prior family history of that condition may have had exposure to an Environmental factor that caused an Epigenetic Mutation. These Mutations alter the chemical switches that turn the genes on or off.
The physical structure of the DNA is changed or altered by the Epigenetic Mutation. For example the DNA methylation, which is an addition to the methyl group, and prevents specific genes from being expressed.
Learn more about Epigenetic Mutation at:
brainly.com/question/13035912
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bacteria have the DNA as well as the tools (such as ribosomes and proteins) in order to reproduce themselves. While viruses only contain limited DNA and no not have the necessary tools.
bacteria reproduces asexually. a virus reproduces by invading a host cell casing the cell to make copies of the DNA(RNA). destroying the host cell and releasing the virus.
All of the above Because You work on it any time else and your bones wont be as strong as you grow older if you work on it all the time you have stronger bones
Answer:
Hormonal changes along with sleeplessness and the constant demands of a new baby can create surprising new feelings, too: anger, sadness, feeling trapped or isolated—even guilt, fear, and inadequacy.
Explanation:
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