Natural Selection is the process by which the most adapted, or fittest, species survive and the least adapted, or unfit, species do not survive. An example of Natural Selection is if there are two species of birds that eat the same thing, but one of the species has a beak that makes it harder to eat the food, naturally the species that has the beak fit to eat that food will survive. The species that is not fit to eat that food will either adapt or will be unable to survive. Evolution is a species adapting to the enviornment over a period of time. There is microevolution and macroevolution.
Answer:
Hypothalamus
Explanation:
The portion of the brain that maintains the body’s internal balance (homeostasis).
The hypothalamus is the link between the endocrine and nervous systems.
The hypothalamus produces releasing and inhibiting hormones, which stop and start the production of other hormones throughout the body.
The hypothalamus plays a significant role in the endocrine system. It is responsible for maintaining your body’s internal balance, which is known as homeostasis. To do this, the hypothalamus helps stimulate or inhibit many of your body’s key processes, including:
Heart rate and blood pressure
Body temperature
Fluid and electrolyte balance, including thirst
Appetite and body weight
Glandular secretions of the stomach and intestines
Production of substances that influence the pituitary gland to release hormones
Sleep cycles
The hypothalamus is involved in many functions of the autonomic nervous system, as it receives information from nearly all parts of the nervous system. As such, it is considered the link between the nervous system and the endocrine system
Answer:
B) You measure the quantity of the appropriate pre-mRNA in various cell types and find they are all the same.
Explanation:
In the above scenario, we are using the control gene and we should know about the control gene is that its expression is either at transcription level or at translation level. For this situation we should examine the pre-mRNA stage of control gene in various cells because it is control gene so it should be present in various cells.
So, the best practice is to quantify the pre-mRNA level of gene then we can effectively solve the experimental problem and find the gene expression either it is at transcription or translation level.
Answer:
The answer is Y
Explanation:
Trust me I've done this before
