Answer:
C. The sun
Explanation:
The sun provides energy for the plant to do photosynthesis. Since all animal species depend on plants qnd the sun helps the plants, the sun is the original source of energy.
The answer is <span>B) three chromosomes in any one set.
In a human diploid somatic cell (2n), there are 22 chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes (so choice C. does not indicate a genetic problem). There are in total 46 chromosomes (23 pairs in 2 copies), that differs in lengths (so choice D. does not indicate a genetic problem). Speaking of a pair of sex chromosomes, there could be two X chromosomes in females or one X and one Y chromosome in males (so choice A. </span><span>does not indicate a genetic problem).
But, having three chromosomes in </span>any one set suggests a presence of trisomy, which is <span> a condition in which an extra copy
of some chromosome is present. This results in a genetic disorder.</span>
Well, if a students wants to determine the effects of fertilizer on corn growth, they could set up a experiment.
There would be two groups of corn each exposed to the same conditions. The only difference is that one of the groups is given fertilizer. The other isn’t, meaning that it is the control group.
Answer:
The correct answer is "Darwin's theory of evolution is based on the premise of survival of the fittest; antibiotic-resistant microorganisms are selected by overuse of antibiotics".
Explanation:
Darwin's theory of evolution states that advantageous traits in living beings are selected under the premise of survival of the fittest, where the living beings with the advantageous traits are more likely to survive and reproduce. Darwin's theory of evolution explains the spread of antibiotic-resistant microorganisms, because resistance to antibiotics is an advantageous trait for microorganisms that are constantly in contact with antibiotics. The irresponsibly use of antibiotics leads to the spread of antibiotic-resistant microorganisms, because microorganisms that are naturally resistant to antibiotics are constantly selected and can reproduce and prosper.
Answer:
<u>Homeostasis</u> is an outcome of gene regulation.
Explanation:
Gene regulation can be described as one of the vital processes through which maintenance of the body's internal conditions takes place. The mechanism of gene regulation monitors the production rate of a specific protein according to the requirements of the body. Almost every RNA or protein of the body needs regulation.
Homeostasis can be described as the maintenance of ideal conditions for the proper functioning of the body. The genes needed for maintaining homeostasis need to be properly regulated. For example, regulation of temperature, regulation of blood glucose level.
