Answer:
D. A and B
Explanation:
Some <em>Apis mellifera </em>bees genetically inherit the hygienic behaviour to remove the dead and diseased larvae from beehives by uncapping the sealed cells. This activity maintains the overall health of the bee colony by protecting it from unwanted pests and pathogenic diseases. Usually both hygienic and non hygienic bees survive well.
Here, in hot summer many bees had perished due to disease and hot climate. Accumulation of dead larvae in hives of non hygienic bees would have invited more pathogens and created infectious conditions in summer. Hence their hives could not survive. Now the remaining hygienic bees will mate with each other and the offspring will have more chances to be born with the hygienic trait. Hence the frequency of alleles determining this trait will increase in this population. This would also be an example of natural selection as hygienic bees were preferred by the nature over non hygienic ones to survive in hot season.
Deletion, substitution or addition cause mutation that alters the sequence of the stop codon. These can lead to change the structure of the codon. If a stop codon is altered to any other codon, the codon will start coding for that amino acid and the synthesis of polypeptide continues and some another protein is formed in the place of original polypeptide.
The best answer is d - solvent
A solvent is a substance, usually a liquid, in which other materials dissolve to form as solution.
In this case, water is the solvent while salt is called the solute, the substance being dissolved. When this happens a solution is formed.
Usually the solvent is the substance that makes up majority if the solution, while the solute is the substance that makes up the minority of the solution.
Salt dissolved in water forms a solution called brine.
Answer: Kidney
Explanation:
Kidney is a structure that is located toward the dorsal side of the body, lateral and superior to the hamstring but inferior to the heart.
The kidneys are a pair of bean shaped organs that are located at the downward part of the rib cage. The body of humans consists of two kidneys one kidney on each side of the spine and they're responsible for the filtering of excess water, waste products, and other impurities out of the human body.
Answer:
Spirometry is a type of pulmonary function test (PFT), a noninvasive procedure that provides important information about how well the lungs are working. More specifically, it reveals how much air is moving through the lungs and how quickly as you breathe through a tube.
Hope this helps!
