Answer:
D.
Explanation:
According to the law of reflection, angle of incidence is equal to the angle of reflection when a ray of light falls at a smooth surface and reflected. This law of reflection is also followed by waves of water as well.
If a beam of flashlight is allowed to reflect from a mirror and waves of water being reflected off the side of a swimming pool, both will follow the above law of reflection,<em> it means the angle at which wave and light will strike (angle of incidence) will be equal to the angle at which wave and light will reflect (angle of reflection).</em>
It can be concluded that angle of strike (angle of incidence) is the angle of reflection (angle of reflection).
Hence, the correct answer is D.
Behavioral isolation occurs when a subset of a particular species slowly undergoes changes in its behavior ordinarily due to traveling to different geographical regions.
Answer:
B.
artificial selection
Explanation:
Artificial selection is often utilized in crop and animal farming to obtain favorable traits in organisms. Organisms with desirable traits are selected and crossed with each other. Since the selection is done by humans and not by natural processes, it is called artificial selection.
In the given case, the farmers select corn plants with large ears. The selected plants are crossed with each other so that the next generation has the maximum chances of producing large ears. Hence, artificial selection is used here.
Answer: The correct option is B. To determine if one trait could affect the inheritance of other trait.
The dihybrid cross is a cross between the two parents who have difference in two pairs of the alleles.
In the experiment of the dihybrid cross, during the first meiotic division the homologous pair of the chromosomes aligned randomly before getting separated from each other. The separation of the chromosomes leads to independent assortment. The four cells which are formed during the second meiotic division are developed into the haploid gametes.
The relationship data of the dominance for each trait between the alleles was available with Mendel. The purpose of the dihybrid cross was to determine the type of relationship that existed between the pair of alleles.
The result of the experiment of the dihybrid cross was the law of independent assortment according to which the formation of gametes the segregation of alleles of both the pairs of alleles are independent of each other.