The correct answer is: B) stabilizing selection
Stabilizing selection is a type of natural selection in which the population mean (non-extreme trait value) is favored over extreme values. It favors the intermediate variants such as heterozygous phenotype (more than both homozygous). This is the most common type of selection, because most traits change little over time (not by favoring extreme traits).
The modern theory of evolution states that a basis for variation within a species is provided by mutations. It plays an important role in evolution. The best source of all genetic variation is mutation. It is important as the first step of evolution<span> because it creates a new DNA sequence for a particular gene, creating a new allele.</span>
Answer:
<u>D) the nucleic acid (either DNA or RNA)</u>
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Explanation:
Phages, or bacteriophages are viruses that infect bacteria.They have varying shapes, and sizes, and may contain one of two kinds of nucleic acid; these are RNA and DNA.
The nucleic acids are made up of nucleotides. These are genetic storage biomolecules made up of the monomers ribonucleic acid (RNA) deoxyribonucleic acid (DNA).
<span>Extensive drinking of water during exercise leads to a condition called as hyponatremia. In this, water causes dilution of the blood and sodium levels drops too low. To maintain homeostasis in such situation, water intake shoud be reduced, sodium containing fluids should be taken, extra salt may also be added to the food, to maintain normal sodium levels in the blood.</span>
Answer:
Between 30 degrees N and 30 degrees S of the equator
Explanation:
