A farmer sprays insecticide on his crops to kill unwanted insects. Most of the insects die, and the chemicals have the effect of damaging the DNA of the insects that are not killed. Which of these has happened?A. Sexual selection among the insects has changed the gene pool.
B. Genetic equilibrium has been maintained.
C. Mutations have arisen that may have altered allele frequencies.
D. Individuals with new genes have immigrated into the population.
Answers
The correct answer is option C, Mutations have arisen that may have altered allele frequencies
There have been several instances where mutation in the gene of an insect is caused due to the harmful external environmental condition which are either created or occurs naturally. Usually, the organisms evolve themselves to sustain in an adverse environment condition. In the process of evolution, they go through the process of positive genetic mutation but sometimes the mutation may also produce negative effect on the DNA of an species through wrong or inefficient pairing/coding. Here in this case it can be stated that the chemical sprayed on insects might have attacked the gene pool of the insects thereby producing adverse genetic mutation.
When a farmer sprays insecticide on crops, the DNA of the insects that are not killed can be damaged, leading to mutations that may alter allele frequencies in the population.
A farmer spraying insecticide on his crops to kill unwanted insects has the effect of damaging the DNA of the insects that are not killed. This can lead to mutations that may alter allele frequencies in the insect population. Hence, the correct answer is C. Mutations have arisen that may have altered allele frequencies.
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Related Questions
Doctors do not administer vaccinations to people who are too sick. Which best explains why? A. The weakened or dead form of the pathogen may not have any effect on sick people. B. The weakened or dead form of the pathogen may have a fatal effect when it is combined with medication that the sick people are taking. C. The digestive systems of sick people may be negatively affected by the weakened or dead pathogen. D. The white blood cells of sick people may not be able to efficiently handle the weakened or dead form of the pathogen.
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1. Which of the following is responsible for transmitting an impulse across a synapse to another cell?
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Answer: The correct answer is thymine.
Explanation:
DNA is a complex chemical compound which carries genetic information of a living being. It is a double helix structure. The full form for this is deodorize nucleic acid.
This compound is made up of 4 nitrogenous bases named as adenine (A), guanine (G), cytosine (C) and Thymine (T).
Adenine forms double hydrogen bonds with Thymine and cytosine forms triple hydrogen bonds with guanine.
In RNA, the nitrogenous bases found are adenine (A), guanine (G), cytosine (C) and Uracil (U).
The nitrogenous base Thymine is the only base which is found only in DNA.
Hence, the correct answer is thymine.
Answer:
Thymine.
Explanation:
DNA is present as the genetic material in case of almost all the organisms except some viruses only. RNA is present as the genetic material in case of the few viruses only.
DNA is made of the four nitrogenous bases, pentose deoxyribose sugar and the phosphate group. The adenine, guanine and cytosine are present in both the RNA and DNA. Thymine is present in case of the DNA only and absent in RNA and other molecule.
Thus, the correct answer is option (4).
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Answer:
The answer is Predator.
Explanation:
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Answer:
Phospholipids
Explanation:
Cell membrane is an important type of cellular structure in the cells of living organisms. It functions to allow selective movement of materials or substances in an out of the cell.
Cell membrane is made up of a phospholipid bilayer and proteins embedded in it. Phospholipids form this lipid bilayer which is the basic structure of the cell membrane. The membrane also contains cholesterol molecules which help in keeping the membrane fluid consistent.
Additionally, the membrane also contains proteins whose function is to enhance the transportation of materials across the membrane.
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The form of cell division that poses the lower risk for the transmission of genetic disorders would be meiosis.
Binary fission is essentially mitosis. It has to do with the division of vegetative cells in which the daughter cells have exactly the same gene copies and looks as the parent cell. thus, any disorder in the parent cell comes out in an exact fashion in the daughter cells.
During meiosis, however, genetic recombinations do occur and this makes the daughter cells to be genetically different from the parent cell. Hence, the chances that a genetic disorder from the parent cell would be inherited by the daughter cells would become limited.
More on meiosis and genetic recombination can be found here: brainly.com/question/1013949
B).ozone
C).radon
D).carbon dioxide