1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
babunello [35]
3 years ago
13

DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against

many insects. Which of these would have prevented this evolution of DDT resistance in insect pests?A) All habitats should have received applications of DDT at about the same time.B) The frequency of DDT application should have been higher.C) None of the insect pests would have genetic variations that resulted in DDT resistance.D) DDT application should have been continual.
Biology
1 answer:
erastovalidia [21]3 years ago
6 0

Answer:

DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against many insects. Which of these would have prevented this evolution of DDT resistance in insect pests?

What would have prevented the evolution of DDT resistance in insect pests is the None of the insect pests would have genetic variations that resulted in DDT resistance.

Explanation:

You might be interested in
Which is a product of the Krebs cycle<br><br> A. ADP<br> B. NADH<br> C. pyruvate<br> D. glucose
brilliants [131]

Answer:

B. NADH

Explanation:

For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced.

3 0
3 years ago
What three processes lead to variation among offspring that have the same two parents?
beks73 [17]

Explanation:

Genetic variation in offspring during sexual reproduction is caused by

  • crossing over
  • independent assortment
  • randomized fertilization

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.

Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.

  • crossing over:  the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.
  • independent assortment in metaphase I of meiosis: chromosomes align independently and genes segregate independently into new combinations ...in humans 2n, n = 23, 8 million combinations of chromosomes possible
  • randomized fertilization: sperm cells fertilize an ovum to form a zygote. This occurs randomly by chance, to result in a complete set of chromosomes 2n, that is a novel combination of half each parent's number of chromosomes

Learn more about mitosis at brainly.com/question/4303192

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

9 0
3 years ago
Dimples are dominant; no dimples are recessive. Mr. Dowling is heterozygous for dimples, and Mrs. Dowling is also heterozygous f
morpeh [17]

Answer:

There offspring will have dimples

Explanation:

If wrong I am sorry.

7 0
3 years ago
The graph below shows the speed of a ball rolling over uneven ground.
Alex787 [66]

Answer:

It is Distance (meters)

between seconds 3 and 4

Explanation:

I had this on my test last week

7 0
3 years ago
Which phrase defines a community?
gtnhenbr [62]
B. group of the same species that live together.
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is an ecological impact of growing the same crop, year after year, on the same plot of land?
    6·2 answers
  • Water molecules exhibit a property by virtue of which they can stick to each other. What is this property referred to as?
    9·1 answer
  • I know this is a lot but if anyone could help with at least one question.... please:(
    15·1 answer
  • Which of these is a benefit of GMOs?
    9·2 answers
  • A 70-year-old resident of a long-term care facility has experienced increasing pain, swelling, and redness to her lower leg over
    14·1 answer
  • A glycosidic linkage is analogous to_________ in proteins
    13·1 answer
  • Which of the following does not provide scientific evidence of changes in populations over time? Select one: a. biochemistry b.
    11·2 answers
  • Analyze the diagram below:
    12·1 answer
  • What is the valence of an atom with six electrons in its outer electron shell?
    11·1 answer
  • What is precipitation reactions​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!